A198992 - OEIS

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A198992

Decimal expansion of x>0 satisfying 4*x^2-2*cos(x)=1.

7, 7, 8, 4, 5, 8, 8, 9, 9, 8, 1, 9, 6, 9, 4, 6, 8, 0, 4, 5, 3, 2, 2, 4, 8, 6, 5, 8, 4, 0, 5, 8, 9, 2, 7, 5, 2, 6, 5, 8, 4, 1, 2, 6, 2, 9, 3, 0, 8, 3, 3, 6, 3, 2, 4, 3, 8, 4, 7, 7, 2, 4, 6, 9, 3, 1, 6, 6, 9, 5, 8, 7, 3, 4, 2, 6, 8, 8, 6, 8, 5, 4, 3, 2, 6, 5, 8, 1, 0, 9, 2, 5, 4, 0, 4, 6, 3, 3, 4

(list; constant; graph; refs; listen; history; text; internal format)

OFFSET

0,1

COMMENTS

See A198755 for a guide to related sequences. The Mathematica program includes a graph.

LINKS

Table of n, a(n) for n=0..98.

EXAMPLE

x=0.77845889981969468045322486584058927526584126293...

MATHEMATICA

a = 4; b = -2; c = 1;

f[x_] := a*x^2 + b*Cos[x]; g[x_] := c