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A198984
Decimal expansion of x>0 satisfying 4*x^2+cos(x)=4.
2
9, 2, 1, 3, 0, 6, 0, 6, 5, 8, 4, 7, 8, 0, 8, 9, 9, 3, 0, 4, 7, 8, 6, 8, 1, 2, 9, 7, 4, 7, 8, 4, 7, 4, 8, 2, 7, 5, 7, 1, 7, 9, 8, 0, 8, 3, 1, 1, 4, 4, 1, 6, 7, 1, 7, 5, 9, 2, 4, 4, 0, 0, 0, 7, 1, 8, 1, 7, 7, 1, 5, 9, 0, 8, 0, 2, 4, 7, 1, 8, 9, 9, 3, 4, 3, 0, 5, 9, 4, 4, 0, 6, 9, 7, 6, 6, 8, 9, 1
OFFSET
0,1
COMMENTS
See A198755 for a guide to related sequences. The Mathematica program includes a graph.
EXAMPLE
x=0.92130606584780899304786812974784748275717980831...
MATHEMATICA
a = 4; b = 1; c = 4;
f[x_] := a*x^2 + b*Cos[x]; g[x_] := c
Plot[{f[x], g[x]}, {x, -2, 2}, {AxesOrigin -> {0, 0}}]
r = x /. FindRoot[f[x] == g[x], {x, .92, .93}, WorkingPrecision -> 110]
RealDigits[r] (* A198984 *)
CROSSREFS
Cf. A198755.
Sequence in context: A093962 A350298 A230191 * A118322 A199507 A230156
KEYWORD
nonn,cons
AUTHOR
Clark Kimberling, Nov 01 2011
STATUS
approved