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A198430 Decimal expansion of x>0 having x^2-2x=4*sin(x). 2
2, 6, 7, 4, 0, 9, 8, 0, 8, 7, 0, 5, 0, 6, 8, 0, 8, 5, 1, 5, 5, 3, 6, 3, 9, 3, 8, 9, 9, 9, 2, 3, 0, 5, 6, 7, 6, 6, 6, 6, 7, 1, 8, 7, 7, 3, 7, 0, 6, 6, 1, 7, 8, 6, 1, 1, 8, 9, 8, 0, 0, 4, 8, 2, 6, 7, 9, 1, 0, 9, 2, 4, 8, 8, 1, 6, 1, 5, 6, 5, 2, 8, 8, 4, 4, 1, 9, 3, 6, 8, 6, 8, 2, 5, 6, 9, 8, 2, 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=2.674098087050680851553639389992305676666...

MATHEMATICA

a = 1; b = -2; c = 4;

f[x_] := a*x^2 + b*x; g[x_] := c*Sin[x]

Plot[{f[x], g[x]}, {x, -.2, 3}]

r = x /. FindRoot[f[x] == g[x], {x, 2.67, 2.68}, WorkingPrecision -> 110]

RealDigits[r] (* A198430 *)

CROSSREFS

Cf. A198414.

Sequence in context: A021378 A329246 A201891 * A065488 A016591 A021793

Adjacent sequences:  A198427 A198428 A198429 * A198431 A198432 A198433

KEYWORD

nonn,cons

AUTHOR

Clark Kimberling, Oct 25 2011

STATUS

approved

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Last modified May 13 08:08 EDT 2021. Contains 343836 sequences. (Running on oeis4.)