A198824 - OEIS

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A198824

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

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

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

OFFSET

1,2

COMMENTS

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

LINKS

Table of n, a(n) for n=1..99.

EXAMPLE

x=1.854678247914931494756755132033065068261401688...

MATHEMATICA

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

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