A197384 Decimal expansion of least x > 0 having sin(Pi*x/3) = sin(x)^2.

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

Offset

1,2

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.

Links

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

Example

x=1.54067500293401251088047823952243434438839410204...

Mathematica

b = Pi/3; c = 1; f[x_] := Sin[x]
t = x /. FindRoot[f[b*x] == f[c*x]^2, {x, 1.5, 1.6}, WorkingPrecision -> 200]
RealDigits[t] (* A197384 *)
Plot[{f[b*x], f[c*x]^2}, {x, 1.2, 1.9}]

Crossrefs

Cf. A197133.

Sequence in context: A320411 A197012 A200137 * A193035 A227966 A021653

Adjacent sequences: A197381 A197382 A197383 * A197385 A197386 A197387

Keyword

nonn,cons

Author

Clark Kimberling, Oct 14 2011

Status

approved