A199667 Decimal expansion of x<0 satisfying 3*x^2+2*x*cos(x)=sin(x).

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

Offset: 0

Author

Clark Kimberling, Nov 09 2011

Keywords

• nonn
• cons

Comments

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

Examples

			-0.30732062118281940734119666938615491...
		

Links

• Index entries for transcendental numbers.

Crossrefs

Cf. A199597.

Programs

Mathematica

a = 3; b = 2; c = 1;
f[x_] := a*x^2 + b*x*Cos[x]; g[x_] := c*Sin[x]
Plot[{f[x], g[x]}, {x, -1, 1.5}, {AxesOrigin -> {0, 0}}]
r = x /. FindRoot[f[x] == g[x], {x, -.31, -.30}, WorkingPrecision -> 110]
RealDigits[r] (* A199667 *)