A198876 Decimal expansion of x>0 satisfying 2*x^2-2*cos(x)=3.

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.

Links

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

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

Adjacent sequences: A198873 A198874 A198875 * A198877 A198878 A198879

Keyword

nonn,cons

Author

Clark Kimberling, Oct 31 2011

Status

approved