The document provides an overview of Taylor polynomials and series. It begins by announcing homework assignments and then discusses motivation, derivation, and examples of Taylor polynomials. It defines Taylor series and discusses power series convergence. It provides examples of computing Taylor series for specific functions like ln(x). The document cautions that Taylor series may converge at different rates or not converge at all depending on the value being approximated. It defines power series and radius of convergence, explaining the radius represents the interval on which a power series converges. An example computes the radius of convergence for a geometric power series.
We cover the inverses to the trigonometric functions sine, cosine, tangent, cotangent, secant, cosecant, and their derivatives. The remarkable fact is that although these functions and their inverses are transcendental (complicated) functions, the derivatives are algebraic functions. Also, we meet my all-time favorite function: arctan.
This document defines cyclic groups and discusses their order theorem. It explains that a cyclic group G is generated by a single element a, such that every element of G can be expressed as an power of a. It then proves that the order of a cyclic group equals the order of its generator using the division algorithm, showing that for any integer m, m can be expressed as nq + r, where n is the order of the generator and 0 <= r < n. It provides examples of applications of group theory in fields like physics, biology, crystal structure analysis, and coding theory.
This document discusses basic concepts of probability, including:
- The addition rule and multiplication rule for calculating probabilities of compound events.
- Events can be disjoint (mutually exclusive) or not disjoint.
- The probability of an event occurring or its complement must equal 1.
- How to calculate the probability of at least one occurrence of an event using the complement.
- When applying the multiplication rule, you must consider whether events are independent or dependent.
This document discusses cyclic groups and their properties. It begins by defining a cyclic group as a group that can be generated by one of its elements. It then provides examples of cyclic groups like the integers under addition and groups of integers modulo n. The key properties of cyclic groups are then outlined, including that cyclic groups are abelian, and the criteria for determining subgroup order and generators. Finite cyclic groups are shown to have unique subgroups for each divisor of the group order. The document concludes by discussing the classification and enumeration of subgroups in cyclic groups.
This document discusses group theory concepts including:
1) Definitions of groups, abelian groups, order of groups and elements.
2) Properties of cyclic groups, including examples like Zn and Z.
3) Introduction to normal subgroups and their properties. Factor groups and homomorphisms are also discussed.
This document provides a lesson on conditional probability that includes:
1. Examples and formulas for calculating conditional probability
2. Practice problems solving for conditional probabilities in situations involving cards, dice, families, and committees
3. A discussion of how conditional probability can inform decisions about driving while using a cell phone, health, and sports.
This document summarizes Chapter 10 from a mathematics textbook. The chapter covers limits and continuity. It introduces limits, such as one-sided limits and limits at infinity. It defines continuity as a function being continuous at a point if the limit exists and is equal to the function value. Discontinuities can occur if a limit does not exist or is infinite. The chapter applies limits and continuity to solve inequalities involving polynomials and rational functions. Examples show how to use the definition of a limit to evaluate various types of limits and test continuity.
Lesson 2 derivative of inverse trigonometric functionsLawrence De Vera
This document discusses differentiation of inverse trigonometric functions. It defines inverse trigonometric functions as the inverse of trigonometric functions like sine, cosine, etc. It provides the differentiation formulas for inverse trigonometric functions by relating them to the derivatives of the original trigonometric functions using identities. Examples are also given to demonstrate finding the derivatives of various inverse trigonometric functions and simplifying the results.
Continuity, Removable Discontinuity, Essential Discontinuity. These slides accompany my lectures in differential calculus with BSIE and GenENG students of LPU Batangas
Applied Calculus: Continuity and Discontinuity of Functionbaetulilm
This document provides an overview of continuity of functions including:
1. The three conditions for a function f(x) to be continuous at a point x=c.
2. Examples of determining if functions are continuous or discontinuous at given points.
3. Definitions of a function being continuous at endpoints and across an entire interval.
4. Theorems regarding continuity of algebraic combinations of functions and polynomials.
5. The two types of discontinuity - removable and non-removable - and the concept of continuous extensions.
6. Examples of determining continuous extensions of functions at given points.
The document discusses converse, inverse, and contrapositive statements of conditional (if-then) statements. It provides examples of converting statements to their converse, inverse, and contrapositive forms. It also discusses determining the truth value of predicates by substituting values for predicate variables.
This document contains information about a class on infinite series and sequences taught at Shantilal Shah Engineering College in Bhavnagar, Gujarat, India. It lists the names of 5 students in the Bachelor of Engineering Sem 1 Batch B1 instrumentation and control engineering class for the 2014-2015 academic year. It thanks the reader at the end.
1) The document discusses basic rules and concepts of integration, including that integration is the inverse process of differentiation and that the indefinite integral of a function f(x) is notated as ∫f(x) dx = F(x) + c, where F(x) is the primitive function and c is the constant of integration.
2) Methods of integration discussed include the substitution method, where a function is substituted for the variable, and integration by parts, which uses the product rule in reverse to solve integrals involving products.
3) Finding the constant of integration c requires knowing the value of the primitive function F(x) at a specific point, which eliminates the family of functions and isolates a
This document provides a summary and review of key concepts from Abstract Algebra Part 1, including:
- Groups and their properties of closure, associativity, identity, and inverses
- Examples of finite and infinite, abelian and non-abelian groups
- Subgroups, including cyclic subgroups, tests for subgroups, and examples
- Additional concepts like the order of an element, conjugation, and the center of a group
This document discusses several discrete probability distributions:
1. Binomial distribution - For experiments with a fixed number of trials, two possible outcomes, and constant probability of success. The probability of x successes is given by the binomial formula.
2. Geometric distribution - For experiments repeated until the first success. The probability of the first success on the xth trial is p(1-p)^(x-1).
3. Poisson distribution - For counting the number of rare, independent events occurring in an interval. The probability of x events is (e^-μ μ^x)/x!, where μ is the mean number of events.
Newton divided difference interpolationVISHAL DONGA
This document presents Newton's divided difference polynomial method of interpolation. It defines interpolation as finding the value of 'y' at an unspecified value of 'x' given a set of (x,y) data points. Newton's method uses divided differences to determine the coefficients of a polynomial that can be used to interpolate and estimate y-values between the given data points. The document includes an example of applying Newton's method to find the interpolating polynomial and estimate an unknown y-value for a given set of 5 (x,y) data points.
Taylor series and maclaurin with exercicesHernanFula
The document discusses Taylor series and Maclaurin series. It explains that a Taylor series is an expansion of a function about a point as an infinite sum of terms calculated from the function's derivatives. A Maclaurin series is a specific type of Taylor series where the expansion is about x=0. The document provides examples of Taylor series for common functions and methods for calculating Taylor polynomials and series coefficients in Mathematica. It also gives exercises for determining Taylor polynomials and comparing them to functions.
This document provides an overview of Taylor series and power series. It discusses what a series is, examples of geometric and infinite series, and how to construct Taylor polynomials that match the behavior of functions like ln(1+x) and sin(x) at specific points by using their derivatives. The document notes that power series representations allow complicated functions to be broken down into polynomials, which can be useful for applications like engineering and building bridges.
The Taylor series provides a means to approximate a function value at one point based on the function value and its derivatives at another known point. It states that any smooth function can be approximated as a polynomial. The Taylor series expansion allows estimating the value of a function like x^100 at a point like x=20 by using the known value and derivatives of the function at another point, like x=1. Increasing the order of the Taylor series approximation or decreasing the step size between points improves the accuracy of the approximation.
This document discusses Taylor series and their applications. It begins by defining Taylor series and providing common examples. It then presents the general form of a Taylor series and explains how it can be used to approximate a function around a point by knowing its value and derivatives at that point. The document also discusses the error in Taylor series approximations and provides an example of using a Taylor series to estimate e1 to within an error of 10-6. It directs readers to additional online resources for further information on Taylor series.
This document discusses Taylor series and their applications. It begins by showing examples of using Taylor series to approximate functions at different points. It then provides background on famous mathematicians who contributed to the development of Taylor series. It explains Taylor's theorem which forms the basis for Taylor series and polynomial approximations. Several proofs are given, including that Taylor series can be used to represent entire functions like sine. Applications of Taylor series discussed include special relativity, optics, physics, and surveying.
Taylor and Maclaurin series are infinite sums based on a parent function that can be used to approximate functions. A Taylor series uses derivatives evaluated at a specific point a, while a Maclaurin series sets a to 0. To find a Maclaurin series, one takes the derivatives of the function and uses them to determine the coefficients in the general term formula with a=0. Examples show finding the Maclaurin series involves taking derivatives, looking for patterns, and plugging a=0 and the coefficients into the general term formula.
Brook Taylor developed ideas regarding infinite series in the late 17th century. The document discusses Taylor series and Maclaurian series, which are ways of approximating functions using polynomials. Taylor series expand a function around a point x=a using derivatives, while Maclaurian series use a point of x=0. Examples are given of approximating common trigonometric functions like cosine using Taylor polynomials of increasing degrees. The order, degree, and number of terms in the approximations are defined.
Taylor and Maclaurin series are infinite sums based on a parent function that can be used to approximate functions. A Taylor series uses derivatives evaluated at a specific point a, while a Maclaurin series sets a to 0. To find a Maclaurin series, one takes the derivatives of a function and uses them to determine the coefficients in the general term formula with a=0. Examples show finding the derivatives of a function and spotting patterns to more easily determine the Maclaurin series.
This document discusses Taylor and Maclaurin series. It provides examples of expanding functions using these series, including expanding polynomials, trigonometric functions like sin and cos, and the natural log function. Standard expansions are also listed for common functions using Maclaurin series, such as e^x, ln(1+x), sin(x), and tanh(x).
F and G Taylor Series Solutions to the Circular Restricted Three-Body ProblemEtienne Pellegrini
Presentation given at the AAS/AIAA Space Flight Mechanics Meeting in Santa Fe, NM, on 1/27/2014
The Circular Restricted Three-Body Problem is solved using an extension to the classic F
and G Taylor series. The Taylor series coefficients are developed using exact recursion formulas, which are implemented via symbolic manipulation software. In addition, different
time transformations are studied in order to obtain an adapted discretization for the three-body problem. The resulting propagation method is compared to a conventional numerical
integration method, the Runge-Kutta-Fehlberg integrator, on a set of test scenarios designed to qualitatively represent the different types of three-body motion. The series solution is demonstrated to have comparable performance to the conventional integrator, when considering a variety of circumstances, such as the independent variable, error tolerance, orbit characteristics, and integration scheme. In the variable-step case, for low-fidelity applications, such as preliminary design of trajectories, the F and G series with no time transformation are shown to be two to three times faster than the conventional integrator in all cases, when selecting an appropriate order. In the fixed-step case, the Sundman time transformations are demonstrated to reduce the number of steps required for convergence by one or more orders of magnitude. This improved discretization confirms the value of regularization in the restricted three-body problem, and suggests the utility of fixed-step integration using Sundman transformed equations of motion.
The document discusses using Taylor series approximations to evaluate expressions. It finds the maximum error of approximating e-0.5 as 1 - 0.5 + 0.5^2, determines the value of x for which this approximation is accurate to within 0.01, and establishes that an 8th degree Taylor polynomial is needed to approximate e^x in [-1,1] with an error less than 0.001.
This document discusses Taylor series expansions. It defines Taylor series as the expansion of a complex function f(z) that is analytic inside and on a simple closed curve C in the z-plane. The Taylor series expresses f(z) as a power series centered at a point z0 within C. It provides examples of standard Taylor series expansions and worked illustrations of expanding various functions as Taylor series. The document also notes that the radius of convergence of a Taylor series is defined by the distance to the nearest singularity from the center point z0.
Solved numerical problems of fourier seriesMohammad Imran
This document is a report by Mohammad Imran on solved numerical problems of Fourier series. It discusses Fourier series and provides solutions to questions involving Fourier series. The report is presented to the Jahangirabad Institute of Technology as part of a semester 2 course on the topic of Fourier series.
Taylor series provide approximations of functions using derivatives. They represent a function as an infinite sum of terms calculated from its derivatives at a single point. Using a finite number of terms provides a close approximation to the true solution. The number of terms and distance from the point determine the accuracy, with more terms and smaller distance yielding better approximations. Taylor series are useful for numerical differentiation in reservoir simulation models.
The document discusses Taylor series. Taylor series are a way to represent functions as infinite sums of terms that are calculated from the values of the function's derivatives. Taylor series allow functions to be approximated by polynomials, and are useful for analyzing the behavior of functions and solving problems involving calculus.
The document discusses how to create a Taylor series for the sine function centered at 0 using the base point 0. It states that to create the series, you use function values of zero to plug into the original formula of sine in order to generate the coefficient pattern for the Taylor series centered at 0.
The document discusses Taylor series and their applications. It introduces Taylor series as a way to approximate functions using their derivatives. Examples are provided for linear, quadratic, and higher order Taylor approximations. Applications discussed include using Taylor series in physics for concepts like special relativity equations.
Este documento presenta dos ejercicios relacionados con series de Taylor y Mclaurin. En el primer ejercicio, se pide determinar el polinomio de Taylor de cuarto orden centrado en c=1 para dos funciones. En el segundo ejercicio, se pide escribir el polinomio de Mclaurin de tercer orden para la función arcsen(x) y compararlo numéricamente con los valores reales. También se pide graficar ambas funciones. Finalmente, se pide confirmar una desigualdad numéricamente usando la aproximación de Taylor
Continuity is the property that the limit of a function near a point is the value of the function near that point. An important consequence of continuity is the intermediate value theorem, which tells us we once weighed as much as our height.
This document summarizes a lesson on the spectral theorem and its applications:
1) It introduces the spectral theorem, which states that certain matrices can be diagonalized, such as symmetric matrices.
2) It shows how the spectral theorem can be used to derive an explicit formula for the Fibonacci sequence by representing it as a matrix equation and diagonalizing the matrix.
3) It discusses how the spectral theorem can be applied to analyze Markov chains through diagonalization of the transition matrix.
This document contains lecture notes on evaluating definite integrals. It introduces the definition of the definite integral as a limit of Riemann sums, and properties of integrals such as additivity and comparison properties. It also states the Second Fundamental Theorem of Calculus, which relates definite integrals to indefinite integrals via the derivative of the integrand function. Examples are provided to illustrate how to use these properties and theorems to evaluate definite integrals.
This section introduces differential equations and their use in mathematical modeling. It provides examples of verifying solutions to differential equations by direct substitution. Typical problems show finding an integrating constant to satisfy an initial condition. Differential equations are derived from descriptions of real-world phenomena involving rates of change. The section establishes foundational knowledge of differential equations and their solution methods.
This document discusses inverse trigonometric functions including arcsine, arccosine, and arctangent. It explains that arcsine is the inverse of sine, with domain [-1,1] and range [-π/2, π/2]. Arccosine has domain [-1,1] and range [0,π]. Arctangent has domain (-∞, ∞) and range [-π/2, π/2]. The document also notes that applying the inverse function twice returns the original value, and the outer function's domain takes precedence when functions are composed. It recommends graphing the inverse trig functions to better understand their properties.
Let's analyze the remainder term R6 using the geometry series method:
|tj+1| = (j+1)π-2 ≤ π-2 = k|tj| for all j ≥ 6 (where 0 < k = π-2 < 1)
Then, |R6| ≤ t7(1 + k + k2 + k3 + ...)
= t7/(1-k)
= 7π-2/(1-π-2)
So the estimated upper bound of the truncation error |R6| is 7π-2/(1-π-2)
This document analyzes the diophantine equation x^2 + y^2 = n^2 in connection with a famous problem proposed at the 1988 International Mathematical Olympiad. It defines a function F(x,y) and uses properties of F to find integer solutions to the equation. It shows that for prime numbers p, the only integer solutions are the trivial ones (0,p^2) and (p^3,p^2). More generally, it finds that for any number n, the only integer solutions are n^2 or possibly another non-trivial integer if n belongs to a specific sequence generated by another number. It concludes by conjecturing the full set of integer solutions.
This document provides examples and explanations of finding nth derivatives of various functions. It begins with examples of the nth derivatives of ln(x), ex, sin(x), and xsin(x). Common patterns are identified, such as the nth derivative of ln(x) being (-1)n-1(n-1)!/xn. Exercises are then provided to find formulas for the nth derivatives of additional functions like cos(x), xcos(x), xln(x), e5x, xn, and polynomials.
The document contains solutions to 4 problems posed at the IMC 2016 conference in Bulgaria.
The first problem proves that the sum of a sequence of positive numbers divided by increasing powers of 2 is less than or equal to 2. The second problem finds the minimum value of a function over continuous functions satisfying a given inequality.
The third problem proves that if a function satisfies three properties related to permutations, then the size of the ring it is defined over must be congruent to 2 modulo 4.
The fourth problem proves an inequality relating the number of integer solutions to an inequality when the upper bound is increased or decreased by 1.
This document provides an outline and review for the final exam in Math 1a Integration. It covers key topics like the Riemann integral, properties of the integral, comparison properties, the Fundamental Theorem of Calculus, and integration by substitution. Examples are provided to illustrate computing integrals using properties, the relationship between antiderivatives and derivatives defined by integrals, and applying the Fundamental Theorem of Calculus to find derivatives.
The document discusses Taylor series and how they can be used to approximate functions. It provides an example of using Taylor series to approximate the cosine function. Specifically:
1) It derives the Taylor series for the cosine function centered at x=0.
2) It shows that this Taylor series converges absolutely for all x.
3) It demonstrates that the Taylor series equals the cosine function everywhere based on properties of the remainder term.
4) It provides an example of using the Taylor series to approximate cos(0.1) to within 10^-7, the accuracy of a calculator display.
V. Dragovic: Geometrization and Generalization of the Kowalevski topSEENET-MTP
This document summarizes the contents of a presentation on geometry and integrability. It discusses topics like Sophie Kowalevski's work, billiards within ellipses, the Poncelet theorem, generalizations of the Darboux theorem, the Kowalevski top, and discriminantly separable polynomials. It also presents theorems regarding properties of billiard trajectories within ellipsoids and the geometric interpretation of the Kowalevski fundamental equation.
S1. Fixed point iteration is a numerical method for solving equations of the form x = g(x) by making an initial guess x0 and repeatedly substituting xn into the right side to obtain xn+1.
S2. The method converges if |g'(α)| < 1, where α is the root and g' is the derivative of g. This ensures the error decreases at each iteration.
S3. Examples show the method can converge rapidly, as in Newton's method, or diverge, depending on the properties of g near the root. Aitken extrapolation can provide a better estimate of the root than the current iterate xn.
S1. Fixed point iteration is a numerical method for solving equations of the form x = g(x) by making an initial guess x0 and repeatedly substituting xn into the right side to obtain xn+1.
S2. The method converges if g(x) is continuous and λ, the maximum absolute value of the derivative of g(x), is less than 1.
S3. Examples show that fixed point iteration can converge slowly if the derivative of g(x) at the root is close to 1, and Aitken's method can be used to accelerate convergence by extrapolating the iterates.
The document provides an overview of Calculus I taught by Professor Matthew Leingang at New York University. It outlines key topics that will be covered in the course, including different classes of functions, transformations of functions, and compositions of functions. The first assignments are due on January 31 and February 2, with first recitations on February 3. The document uses examples to illustrate concepts like linear functions, other polynomial functions, and trigonometric functions. It also explains how vertical and horizontal shifts can transform the graph of a function.
Lesson 2: A Catalog of Essential Functions (slides)Matthew Leingang
This document provides an overview of different types of functions including: linear, polynomial, rational, power, trigonometric, and exponential functions. It discusses representing functions verbally, numerically, visually, and symbolically. Key topics covered include transformations of functions through shifting graphs vertically and horizontally, as well as composing multiple functions.
This document provides guidance on developing effective lesson plans for calculus instructors. It recommends starting by defining specific learning objectives and assessments. Examples should be chosen carefully to illustrate concepts and engage students at a variety of levels. The lesson plan should include an introductory problem, definitions, theorems, examples, and group work. Timing for each section should be estimated. After teaching, the lesson can be improved by analyzing what was effective and what needs adjustment for the next time. Advanced preparation is key to looking prepared and ensuring students learn.
Streamlining assessment, feedback, and archival with auto-multiple-choiceMatthew Leingang
Auto-multiple-choice (AMC) is an open-source optical mark recognition software package built with Perl, LaTeX, XML, and sqlite. I use it for all my in-class quizzes and exams. Unique papers are created for each student, fixed-response items are scored automatically, and free-response problems, after manual scoring, have marks recorded in the same process. In the first part of the talk I will discuss AMC’s many features and why I feel it’s ideal for a mathematics course. My contributions to the AMC workflow include some scripts designed to automate the process of returning scored papers
back to students electronically. AMC provides an email gateway, but I have written programs to return graded papers via the DAV protocol to student’s dropboxes on our (Sakai) learning management systems. I will also show how graded papers can be archived, with appropriate metadata tags, into an Evernote notebook.
This document discusses electronic grading of paper assessments using PDF forms. Key points include:
- Various tools for creating fillable PDF forms using LaTeX packages or desktop software.
- Methods for stamping completed forms onto scanned documents including using pdftk or overlaying in TikZ.
- Options for grading on tablets or desktops including GoodReader, PDFExpert, Adobe Acrobat.
- Extracting data from completed forms can be done in Adobe Acrobat or via command line with pdftk.
Integration by substitution is the chain rule in reverse.
NOTE: the final location is section specific. Section 1 (morning) is in SILV 703, Section 11 (afternoon) is in CANT 200
Lesson 26: The Fundamental Theorem of Calculus (slides)Matthew Leingang
g(x) represents the area under the curve of f(t) between 0 and x.
.
x
What can you say about g? 2 4 6 8 10f
The First Fundamental Theorem of Calculus
Theorem (First Fundamental Theorem of Calculus)
Let f be a con nuous func on on [a, b]. Define the func on F on [a, b] by
∫ x
F(x) = f(t) dt
a
Then F is con nuous on [a, b] and differentiable on (a, b) and for all x in (a, b),
F′(x
Lesson 26: The Fundamental Theorem of Calculus (slides)Matthew Leingang
The document discusses the Fundamental Theorem of Calculus, which has two parts. The first part states that if a function f is continuous on an interval, then the derivative of the integral of f is equal to f. This is proven using Riemann sums. The second part relates the integral of a function f to the integral of its derivative F'. Examples are provided to illustrate how the area under a curve relates to these concepts.
Lesson 27: Integration by Substitution (handout)Matthew Leingang
This document contains lecture notes on integration by substitution from a Calculus I class. It introduces the technique of substitution for both indefinite and definite integrals. For indefinite integrals, the substitution rule is presented, along with examples of using substitutions to evaluate integrals involving polynomials, trigonometric, exponential, and other functions. For definite integrals, the substitution rule is extended and examples are worked through both with and without first finding the indefinite integral. The document emphasizes that substitution often simplifies integrals and makes them easier to evaluate.
Lesson 26: The Fundamental Theorem of Calculus (handout)Matthew Leingang
1) The document discusses lecture notes on Section 5.4: The Fundamental Theorem of Calculus from a Calculus I course. 2) It covers stating and explaining the Fundamental Theorems of Calculus and using the first fundamental theorem to find derivatives of functions defined by integrals. 3) The lecture outlines the first fundamental theorem, which relates differentiation and integration, and gives examples of applying it.
This document contains notes from a calculus class lecture on evaluating definite integrals. It discusses using the evaluation theorem to evaluate definite integrals, writing derivatives as indefinite integrals, and interpreting definite integrals as the net change of a function over an interval. The document also contains examples of evaluating definite integrals, properties of integrals, and an outline of the key topics covered.
This document contains lecture notes from a Calculus I class covering Section 5.3 on evaluating definite integrals. The notes discuss using the Evaluation Theorem to calculate definite integrals, writing derivatives as indefinite integrals, and interpreting definite integrals as the net change of a function over an interval. Examples are provided to demonstrate evaluating definite integrals using the midpoint rule approximation. Properties of integrals such as additivity and the relationship between definite and indefinite integrals are also outlined.
Lesson 24: Areas and Distances, The Definite Integral (handout)Matthew Leingang
We can define the area of a curved region by a process similar to that by which we determined the slope of a curve: approximation by what we know and a limit.
Lesson 24: Areas and Distances, The Definite Integral (slides)Matthew Leingang
We can define the area of a curved region by a process similar to that by which we determined the slope of a curve: approximation by what we know and a limit.
At times it is useful to consider a function whose derivative is a given function. We look at the general idea of reversing the differentiation process and its applications to rectilinear motion.
At times it is useful to consider a function whose derivative is a given function. We look at the general idea of reversing the differentiation process and its applications to rectilinear motion.
This document contains lecture notes from a Calculus I class discussing optimization problems. It begins with announcements about upcoming exams and courses the professor is teaching. It then presents an example problem about finding the rectangle of a fixed perimeter with the maximum area. The solution uses calculus techniques like taking the derivative to find the critical points and determine that the optimal rectangle is a square. The notes discuss strategies for solving optimization problems and summarize the key steps to take.
Uncountably many problems in life and nature can be expressed in terms of an optimization principle. We look at the process and find a few good examples.
The document discusses curve sketching of functions by analyzing their derivatives. It provides:
1) A checklist for graphing a function which involves finding where the function is positive/negative/zero, its monotonicity from the first derivative, and concavity from the second derivative.
2) An example of graphing the cubic function f(x) = 2x^3 - 3x^2 - 12x through analyzing its derivatives.
3) Explanations of the increasing/decreasing test and concavity test to determine monotonicity and concavity from a function's derivatives.
The document contains lecture notes on curve sketching from a Calculus I class. It discusses using the first and second derivative tests to determine properties of a function like monotonicity, concavity, maxima, minima, and points of inflection in order to sketch the graph of the function. It then provides an example of using these tests to sketch the graph of the cubic function f(x) = 2x^3 - 3x^2 - 12x.
Lesson 20: Derivatives and the Shapes of Curves (slides)Matthew Leingang
This document contains lecture notes on derivatives and the shapes of curves from a Calculus I class taught by Professor Matthew Leingang at New York University. The notes cover using derivatives to determine the intervals where a function is increasing or decreasing, classifying critical points as maxima or minima, using the second derivative to determine concavity, and applying the first and second derivative tests. Examples are provided to illustrate finding intervals of monotonicity for various functions.
Lesson 20: Derivatives and the Shapes of Curves (handout)Matthew Leingang
This document contains lecture notes on calculus from a Calculus I course. It covers determining the monotonicity of functions using the first derivative test. Key points include using the sign of the derivative to determine if a function is increasing or decreasing over an interval, and using the first derivative test to classify critical points as local maxima, minima, or neither. Examples are provided to demonstrate finding intervals of monotonicity for various functions and applying the first derivative test.
Sustainability requires ingenuity and stewardship. Did you know Pigging Solutions pigging systems help you achieve your sustainable manufacturing goals AND provide rapid return on investment.
How? Our systems recover over 99% of product in transfer piping. Recovering trapped product from transfer lines that would otherwise become flush-waste, means you can increase batch yields and eliminate flush waste. From raw materials to finished product, if you can pump it, we can pig it.
Are you interested in learning about creating an attractive website? Here it is! Take part in the challenge that will broaden your knowledge about creating cool websites! Don't miss this opportunity, only in "Redesign Challenge"!
What's Next Web Development Trends to Watch.pdfSeasiaInfotech2
Explore the latest advancements and upcoming innovations in web development with our guide to the trends shaping the future of digital experiences. Read our article today for more information.
The DealBook is our annual overview of the Ukrainian tech investment industry. This edition comprehensively covers the full year 2023 and the first deals of 2024.
An invited talk given by Mark Billinghurst on Research Directions for Cross Reality Interfaces. This was given on July 2nd 2024 as part of the 2024 Summer School on Cross Reality in Hagenberg, Austria (July 1st - 7th)
Performance Budgets for the Real World by Tammy EvertsScyllaDB
Performance budgets have been around for more than ten years. Over those years, we’ve learned a lot about what works, what doesn’t, and what we need to improve. In this session, Tammy revisits old assumptions about performance budgets and offers some new best practices. Topics include:
• Understanding performance budgets vs. performance goals
• Aligning budgets with user experience
• Pros and cons of Core Web Vitals
• How to stay on top of your budgets to fight regressions
Quality Patents: Patents That Stand the Test of TimeAurora Consulting
Is your patent a vanity piece of paper for your office wall? Or is it a reliable, defendable, assertable, property right? The difference is often quality.
Is your patent simply a transactional cost and a large pile of legal bills for your startup? Or is it a leverageable asset worthy of attracting precious investment dollars, worth its cost in multiples of valuation? The difference is often quality.
Is your patent application only good enough to get through the examination process? Or has it been crafted to stand the tests of time and varied audiences if you later need to assert that document against an infringer, find yourself litigating with it in an Article 3 Court at the hands of a judge and jury, God forbid, end up having to defend its validity at the PTAB, or even needing to use it to block pirated imports at the International Trade Commission? The difference is often quality.
Quality will be our focus for a good chunk of the remainder of this season. What goes into a quality patent, and where possible, how do you get it without breaking the bank?
** Episode Overview **
In this first episode of our quality series, Kristen Hansen and the panel discuss:
⦿ What do we mean when we say patent quality?
⦿ Why is patent quality important?
⦿ How to balance quality and budget
⦿ The importance of searching, continuations, and draftsperson domain expertise
⦿ Very practical tips, tricks, examples, and Kristen’s Musts for drafting quality applications
https://www.aurorapatents.com/patently-strategic-podcast.html
7 Most Powerful Solar Storms in the History of Earth.pdfEnterprise Wired
Solar Storms (Geo Magnetic Storms) are the motion of accelerated charged particles in the solar environment with high velocities due to the coronal mass ejection (CME).
How RPA Help in the Transportation and Logistics Industry.pptxSynapseIndia
Revolutionize your transportation processes with our cutting-edge RPA software. Automate repetitive tasks, reduce costs, and enhance efficiency in the logistics sector with our advanced solutions.
How Netflix Builds High Performance Applications at Global ScaleScyllaDB
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Taylor Polynomials and Series
1. Sections 10.1–3
Taylor Polynomials and Series
Math E-16
December 19, 2007
Announcements
Matthew Leingang (leingang@math.harvard.edu) at your
service
Homework for next time:
10.1: #2,4,5,7,8,10-13,18,26-28,34
10.2: #1,6,16,17,21,22,28,32,40
10.3: #8-12,20,22,36
2. Taylor Polynomials
Motivation
Derivation
Examples
Taylor Series
Definition
Power Series and the Convergence Issue
Famous Taylor Series
New Taylor Series from Old
4. How does your calculator work?
Suppose you ask your calculator for sin(31◦ ).
Does it construct a right triangle with one angle equal to 31◦ ,
then measure opposite-over-hypotenuse?
Does it construct a unit circle, measure the arc length equal
to 31◦ , then use the vertical coordinate?
No, it uses a polynomial approximation. Deep down,
calculators can only add and multiply anyway.
5. Constant Approximation
If f is continuous at a, then
f (x) ≈ f (a)
when x is “close to” a.
Example
√ √
4.001 ≈ 4=2
sin(91 ) ≈ sin(90◦ ) = 1
◦
But we should be able to do better.
7. Linear Approximation
How can we approximate a function with a line?
Definition
Let f be a function and a a
•
point at which f is
differentiable. Then the linear
approximation to f at a is
L(x) = f (a) + f (a)(x − a)
9. Example
Estimate these by linear approximation.
√
(i) 4.001
(ii) sin(91◦ )
Solution (i)
√ 1
We use f (x) = x, a = 4. Then f (4) = 4 , so
L(x) = 2 + 1 (x − 4)
4
This means √ 1 1
4.001 ≈ 2 + · = 2.00025
4 1000
Notice
(2.00025)2 = 4.001000063
10. Solution (ii)
We use f (x) = sin x, a = 90◦ = π/2. Then f (a) = 1, f (x) = cos x,
so f (a) = 0. This means
L(x) = 1
so the linear approximation is no better than the constant one.
12. Quadratic Approximation
How can we approximate a function with a parabola? We are
looking for a function
Q(x) = c0 + c1 (x − a) + c2 (x − a)2
with Q(a) = f (a), Q (a) = f (a), Q (a) = f (a). What are
c0 , c1 , c2 in terms of f ?
13. Quadratic Approximation
How can we approximate a function with a parabola? We are
looking for a function
Q(x) = c0 + c1 (x − a) + c2 (x − a)2
with Q(a) = f (a), Q (a) = f (a), Q (a) = f (a). What are
c0 , c1 , c2 in terms of f ?
Since Q(a) = c0 , we need c0 = f (a).
Since
Q (x) = c1 + 2c2 (x − a) =⇒ Q(a) = c1
we need c1 = f (a).
Since
Q (x) = 2c2 = Q(a)
we need c2 = 1 f (a).
2
14. Definition
Let f be a function and a a
•
point at which f is twice
differentiable. Then the
quadratic approximation to
f at a is
Q(x) = f (a)+f (a)(x−a)+ 1 f (a)(x−a)2
2
16. Example
Estimate these by quadratic approximation.
√
4.001
sin(91◦ )
Solution (i)
√ 1 1
and f (4) = − 32 , so
We use f (x) = x, a = 4. Then f (4) = 4
− 4)2
Q(x) = 2 + 1 (x − 4) − 1
64 (x
4
This means
√ 1 1 11
4.001 ≈ 2 + · − = 2.000249984
103 64 106
4
√
This is the same answer my TI-83 gives for 4.001.
17. Solution (ii)
We use f (x) = sin x, a = 90◦ = π/2. Then f (a) = 1, f (a) = 0,
and f (x) = − sin x, so f (a) = −1. This means
Q(x) = 1 − 2 (x − π)2
1
so
π2
sin(91◦ ) ≈ 1 − 1
≈ 0.9998476913
2 180
My TI-83 has
sin(91◦ ) = 0.9998476952
which this agrees with up to the ninth place.
18. In General
How can we approximate a function with a polynomial of degree n?
19. In General
How can we approximate a function with a polynomial of degree n?
Definition
Let f be a function and a a point at which f is n times
differentiable. The Taylor Polynomial of degree n for f centered
at a is
f (n) (a)
f (a)
(x − a)2 + · · · + (x − a)n
Pn (x) = f (a) + f (a)(x − a) +
2! n!
n
f (k) (a)
(x − a)k
=
k!
k=0
(Convention: f (0) (x) = f (x))
20. Taylor Polynomials
Motivation
Derivation
Examples
Taylor Series
Definition
Power Series and the Convergence Issue
Famous Taylor Series
New Taylor Series from Old
21. Take it to the Limit
Definition
Let f be a function and a a point at which f is infinitely
differentiable. The Taylor Series of for f centered at a is
f (a)
(x − a)2 +
T (x) = f (a) + f (a)(x − a) +
2!
f (n) (a)
(x − a)n + . . .
··· +
n!
∞
f (k) (a)
(x − a)k
=
k!
k=0
23. Example
Compute the Taylor Series for f (x) = ln x centered at 1.
Solution
f (x) = ln x f (1) = 0
−1
f (x) = x f (1) = 1
−2
f (x) = −x f (1) = −1
−3
f (x) = 2x f (1) = 2
f (4) (x) = −6x −3 f (4) (1) = −6
... ... ... ...
f (k) (x) = (−1)k+1 (k − 1)!x −k f (k) (1) = (−1)k+1 (k − 1)!
So
∞ ∞
(−1)k+1 (k − 1)! (−1)k+1
(x − 1)k = (x − 1)k
T (x) =
k! k
k=1 k=1
24. Caution
The infinite sum is dangerous!
Sometimes it gives very good approximations quickly
Sometimes it gives good approximations slowly
Sometimes it doesn’t give anything.
To see this, let Pn be the nth degree Taylor Polynomial of
f (x) = ln x centered at 1. For which x is T (x) = lim Pn (x)
n→∞
meaningful?
28. Observations
Pn ( 1 ) converges to f ( 1 ) = − ln 2
2 2
Pn (2) converges to f (2) = ln 2, but more slowly
Pn (3) does not converge at all!
So in examining this process of approximation by polynomials, we
have to be a little bit careful about what numbers we plug in.
29. Definition (cf. §9.5)
A power series centered at a is a sum of constants times powers
of (x − a):
c0 + c1 (xa ) + c2 (x − a)2 + · · · + cn (x − a)n + . . .
30. Theorem ∞
cn (x − a)n there are only three
For a given power series
n=1
possiblities:
1. There is a number R such that the series converges when
|x − a| < R and diverges when |x − a| > R.
2. The series converges for all x (R = ∞)
3. The series converges only when x = a (R = 0).
R is called the radius of convergence of the power series.
31. Why radius?
An open interval is kind of like a one-dimensional circle:
a−R a a+R
32. Why radius?
An open interval is kind of like a one-dimensional circle:
convergence on (a − R, a + R)
a−R a a+R
33. Why radius?
An open interval is kind of like a one-dimensional circle:
divergence on (−∞, a − R) and (a + R, ∞)
a−R a a+R
34. Why radius?
An open interval is kind of like a one-dimensional circle:
at the endpoints—???
a−R a a+R
36. Example
Compute the radius of convergence of the power series
∞
xk
f (x) =
k=0
Solution
1
This is a geometric series. We know it converges to when
1−x
|x| < 1, and not when x = 1 or x = −1. So
The radius of convergence is 1
The interval of convergence is the open interval (−1, 1)
37. Famous Taylor Series
Example
Compute Taylor series centered at zero for the following functions:
ex
sin x
cos x
(1 + x)p
39. Example
Compute the Taylor series centered at zero for f (x) = e x
Solution
f (x) = e x f (0) = 1
x
f (x) = e f (0) = 1
x
f (x) = e f (0) = 1
x
f (x) = e f (0) = 1
... ... ... ...
(k) x (k)
f (x) = e f (0) = 1
So
∞
xk
T (x) =
k!
k=0
41. Fact
The Taylor series for the function f (x) = e x converges for all x to
ex .
The convergence is because the factorials k! grow much faster
than the exponentials x k . It’s a little more work to say that it
converges to e x .
43. Example
Compute the Taylor series centered at zero for f (x) = sin x.
Solution
f (x) = sin x f (0) = 0
f (x) = cos x f (0) = 1
f (x) = − sin x f (0) = 0
f (x) = − cos x f (0) = −1
(4)
f (4) (0) = 1
f (x) = cos x
And repeat! So
∞ ∞
±x k (−1)m x 2m+1 x3 x5
=x− − ···
T (x) = = +
k! (2m + 1)! 3! 5!
m=0
k=0
k odd
This turns out to converge for all x to sin x.
45. Example
Compute the Taylor series centered at zero for f (x) = cos x.
Solution
f (x) = cos x f (0) = 1
f (x) = − sin x f (0) = 0
f (x) = − cos x f (0) = −1
f (x) = sin x f (0) = 0
(4)
f (4) (0) = 0
f (x) = sin x
And repeat! So
∞ ∞
±x k (−1)m x 2m x2 x4
=1− − ···
T (x) = = +
k! (2m)! 2! 4!
m=0
k=0
k even
This turns out to converge for all x to cos x.
46. Example (The Binomial Series)
Compute the Taylor series centered at zero for f (x) = (1 + x)p ,
where p is any number (not just a whole number).
47. Example (The Binomial Series)
Compute the Taylor series centered at zero for f (x) = (1 + x)p ,
where p is any number (not just a whole number).
Solution
f (x) = (1 + x)p f (0) = 1
p−1
f (x) = p(1 + x) f (0) = p
p−2
f (x) = p(p − 1)(1 + x) f (0) = p(p − 1)
p−3
f (x) = p(p − 1)(p − 2)(1 + x) f (0) = p(p − 1)(p − 2)
... ... ... ...
So
p(p − 1) 2
T (x) = 1 + px + x + ...
2
∞
p(p − 1)(p − 2) · · · (p − k + 1) k
= x
k!
48. New Taylor Series from Old
Big Time Theorem
We can integrate and differentiate power series, and the ROC stays
∞
ck (x − a)k has radius of convergence R,
the same: If f (x) =
k=0
that is, if
∞
ck (x − a)k when |x − a| < R,
f (x) =
k=0
then
∞
kck (x − a)k−1 when |x − a| < R,
f (x) =
k=1
and
∞
1
ck (x − a)k+1 + C when |x − a| < R.
f (x) dx =
k +1
49. This is really saying two things:
1. The power series which is differentiated (or integrated)
term-by-term has the same radius of convergence as the
original power series.
2. It converges to the thing we want: the derivative or
antiderivative of f
50. The other big theorem
If f has any power series representation near a, then it is equal to
the Taylor Series.
52. Example
Compute the Taylor series centered at 0 for arctan x.
Solution
1
First, we’ll find the Taylor Series for . It’s geometric:
1 + x2
∞ ∞
1 1
(−x 2 )k = (−1)k x 2k .
= =
2 1 − (−x 2 )
1+x
k=0 k=0
This converges when x 2 < 1 ⇐⇒ |x| < 1, so the ROC is 1.
Now arctan is the antiderivative:
∞ ∞ ∞
(−1)k x 2k+1
(−1)k x 2k dx = (−1)k x 2k dx =
arctan x =
(2k + 1)
k=0 k=0 k=0
And the ROC of this 1, too.
53. Cool result
This means if
∞
(−1)k 111
= 1 − + − + ···
(2k + 1) 357
k=0
converges (and it does), it converges to
π
arctan(1) =
4
54. Example
Compute the Taylor series centered at 0 for f (x) = x 7 sin(x 3 ).
Find f (2008) (0).
55. Example
Compute the Taylor series centered at 0 for f (x) = x 7 sin(x 3 ).
Find f (2008) (0).
Solution
∞ ∞
(−1)m (x 3 )2m+1 (−1)m x 6m+3
7 3 7
= x7
x sin(x ) = x
(2m + 1)! (2m + 1)!
m=0 m=0
∞
(−1)m x 6m+10
=
(2m + 1)!
m=0
56. To find f (2008) (0), note
∞ ∞
(−1)m x 6m+10 f (k) (0)x k
=
(2m + 1)! k!
m=0 k=0
Equating the coefficients of x 2008 will get us what we want. If
6m + 10 = 2008, then m = 333. So
f (2008) (0) (−1)333
=
2008! 667!
and thus
2008!
f (2008) (0) = −
667!