A197390 Decimal expansion of least x > 0 having sin(Pi*x/4) = sin(x)^2.

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

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=0.99727303095999657166438345754464539413...
		

Crossrefs

Cf. A197133.

Programs

Mathematica

b = Pi/4; c = 1; f[x_] := Sin[x]
t = x /. FindRoot[f[b*x] == f[c*x]^2, {x, .95, 1.1}, WorkingPrecision -> 200]
RealDigits[t] (* A197390 *)
Plot[{f[b*x], f[c*x]^2}, {x, 0, 3}]