

A198421


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


2



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

1,2


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=1.9514875340956697765470738518775549185...


MATHEMATICA

a = 1; b = 1; c = 2;
f[x_] := a*x^2 + b*x; g[x_] := c*Sin[x]
Plot[{f[x], g[x]}, {x, 1, 2}]
r = x /. FindRoot[f[x] == g[x], {x, 1.9, 2.0}, WorkingPrecision > 110]
RealDigits[r] (* A198421 *)


CROSSREFS

Cf. A198414.
Sequence in context: A049256 A256191 A019982 * A262178 A154483 A198560
Adjacent sequences: A198418 A198419 A198420 * A198422 A198423 A198424


KEYWORD

nonn,cons


AUTHOR

Clark Kimberling, Oct 24 2011


STATUS

approved



