This document provides an overview and review of key concepts in precalculus that are important for success in Calculus I, including:
- Functions and function notation. Key points are that a function assigns a single output to each input, and function notation (e.g. f(x)) represents the output of a function given a specific input.
- Finding roots of functions by setting the function equal to zero and solving.
- Composition of functions, where the output of one function becomes the input of another. The order of functions in composition matters.
- Other topics like inverse functions, trigonometric functions, exponentials and logarithms are also reviewed at a high level.
The document