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A197255 Decimal expansion of least x>0 having sin(2x)=(sin 4x)^2. 2
1, 3, 6, 4, 8, 5, 9, 2, 4, 6, 1, 8, 4, 1, 2, 4, 7, 5, 2, 0, 4, 3, 0, 8, 4, 0, 3, 0, 4, 1, 9, 3, 4, 9, 1, 5, 5, 2, 3, 7, 0, 3, 3, 2, 5, 9, 8, 3, 2, 2, 0, 0, 9, 1, 3, 8, 3, 4, 0, 0, 0, 0, 5, 7, 4, 2, 1, 6, 7, 9, 6, 3, 5, 0, 5, 1, 1, 0, 4, 4, 5, 0, 6, 9, 8, 4, 5, 0, 3, 6, 7, 3, 0, 6, 2, 5, 5, 9, 5, 8 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,2

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=0..99.

EXAMPLE

x=0.1364859246184124752043084030419349155...

MATHEMATICA

b = 2; c = 4; f[x_] := Sin[x]

t = x /. FindRoot[f[b*x] == f[c*x]^2, {x, .1, .2}, WorkingPrecision -> 100]

RealDigits[t] (* A197255 *)

Plot[{f[b*x], f[c*x]^2}, {x, 0, Pi}]

CROSSREFS

Cf. A197133

Sequence in context: A197568 A136612 A004546 * A154890 A248176 A100000

Adjacent sequences:  A197252 A197253 A197254 * A197256 A197257 A197258

KEYWORD

nonn,cons

AUTHOR

Clark Kimberling, Oct 12 2011

STATUS

approved

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Last modified June 28 17:20 EDT 2017. Contains 288839 sequences.