A197392 Decimal expansion of least x > 0 having sin(Pi*x/4) = sin(3*x)^2.

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

Offset: 0

Author

Clark Kimberling, Oct 14 2011

Keywords

• nonn
• cons

Comments

The Mathematica program includes a graph. See A197133 for a guide to least x > 0 satisfying sin(b*x) = sin(c*x)^2 for selected b and c.

Examples

			x=0.0893117748544847629445423601710994770...
		

Crossrefs

Cf. A197133.

Programs

Mathematica

b = Pi/4; c = 3; f[x_] := Sin[x]
t = x /. FindRoot[f[b*x] == f[c*x]^2, {x, .08, .09}, WorkingPrecision -> 200]
RealDigits[t](* A197392 *)
Plot[{f[b*x], f[c*x]^2}, {x, 0, 0.8}]