A199598 Decimal expansion of x>0 satisfying x^2+x*cos(x)=3*sin(x).

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

Offset

1,2

Comments

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

Links

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

Example

x=1.83824345497103964231919887122901021448880...

Mathematica

a = 1; b = 1; c = 3;
f[x_] := a*x^2 + b*x*Cos[x]; g[x_] := c*Sin[x]
Plot[{f[x], g[x]}, {x, -Pi, Pi}, {AxesOrigin -> {0, 0}}]
r = x /. FindRoot[f[x] == g[x], {x, 1.83, 1.84}, WorkingPrecision -> 110]
RealDigits[r]  (* A199598 *)

Crossrefs

Cf. A199597.

Sequence in context: A109866 A097079 A021548 * A011106 A131641 A190408

Adjacent sequences: A199595 A199596 A199597 * A199599 A199600 A199601

Keyword

nonn,cons

Author

Clark Kimberling, Nov 08 2011

Status

approved