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A198876
Decimal expansion of x>0 satisfying 2*x^2-2*cos(x)=3.
2
1, 3, 2, 1, 5, 9, 9, 6, 2, 0, 8, 7, 6, 7, 1, 8, 2, 2, 2, 1, 3, 7, 7, 3, 3, 4, 9, 2, 8, 1, 7, 5, 0, 4, 2, 4, 4, 9, 9, 2, 5, 6, 1, 5, 3, 4, 7, 3, 1, 2, 1, 4, 4, 0, 6, 8, 0, 4, 7, 9, 1, 0, 5, 5, 2, 3, 4, 6, 0, 7, 0, 3, 9, 7, 2, 0, 7, 7, 9, 1, 8, 2, 0, 7, 8, 2, 1, 2, 0, 8, 0, 8, 3, 0, 6, 4, 9, 4, 4
OFFSET
1,2
COMMENTS
See A198755 for a guide to related sequences. The Mathematica program includes a graph.
EXAMPLE
x=1.321599620876718222137733492817504244992561534...
MATHEMATICA
a = 2; b = -2; c = 3;
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, 1.3, 1.4}, WorkingPrecision -> 110]
RealDigits[r] (* A198876 *)
CROSSREFS
Cf. A198755.
Sequence in context: A199479 A050165 A330784 * A033878 A144061 A085792
KEYWORD
nonn,cons
AUTHOR
Clark Kimberling, Oct 31 2011
STATUS
approved