A198492 Decimal expansion of x>0 having x^2-4x=4*sin(x).

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

Offset

1,1

Comments

See A198414 for a guide to related sequences. The Mathematica program includes a graph.

Links

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

Example

x=3.55131545600124371024745663196254347696...

Mathematica

a = 1; b = -4; c = 4;
f[x_] := a*x^2 + b*x; g[x_] := c*Sin[x]
Plot[{f[x], g[x]}, {x, -.2, 4}]
r = x /. FindRoot[f[x] == g[x], {x, 3.55, 3.56}, WorkingPrecision -> 110]
RealDigits[r] (* A198492 *)

Crossrefs

Cf. A198414.

Sequence in context: A138112 A106233 A366568 * A077860 A261340 A078063

Adjacent sequences: A198489 A198490 A198491 * A198493 A198494 A198495

Keyword

nonn,cons

Author

Clark Kimberling, Oct 25 2011

Status

approved