A199661 Decimal expansion of x>0 satisfying 2*x^2+2*x*cos(x)=3*sin(x).

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

Offset

0,1

Comments

See A199597 for a guide to related sequences. The Mathematica program includes a graph.

Links

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

Example

x=0.5811482272034121119867976746206496441856...

Mathematica

a = 2; b = 2; c = 3;
f[x_] := a*x^2 + b*x*Cos[x]; g[x_] := c*Sin[x]
Plot[{f[x], g[x]}, {x, -1, 1}, {AxesOrigin -> {0, 0}}]
r = x /. FindRoot[f[x] == g[x], {x, .58, .59}, WorkingPrecision -> 110]
RealDigits[r]  (* A199661 *)

Crossrefs

Cf. A199597.

Sequence in context: A199073 A199069 A020797 * A343784 A377523 A154856

Adjacent sequences: A199658 A199659 A199660 * A199662 A199663 A199664

Keyword

nonn,cons

Author

Clark Kimberling, Nov 09 2011

Status

approved