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A198492 Decimal expansion of x>0 having x^2-4x=4*sin(x). 2
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 (list; constant; graph; refs; listen; history; text; internal format)
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: A200334 A138112 A106233 * A077860 A078063 A019944

Adjacent sequences:  A198489 A198490 A198491 * A198493 A198494 A198495

KEYWORD

nonn,cons

AUTHOR

Clark Kimberling, Oct 25 2011

STATUS

approved

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Last modified October 25 02:31 EDT 2014. Contains 248517 sequences.