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A199449 Decimal expansion of x>0 satisfying 3*x^2+2*x*sin(x)=cos(x). 2
4, 2, 9, 0, 7, 9, 1, 0, 6, 0, 8, 7, 8, 3, 9, 2, 4, 1, 1, 8, 7, 9, 9, 4, 9, 9, 5, 0, 7, 0, 2, 2, 0, 1, 7, 4, 7, 0, 2, 3, 1, 8, 6, 4, 2, 1, 7, 4, 4, 6, 4, 3, 2, 1, 6, 4, 7, 4, 8, 7, 5, 3, 4, 6, 1, 9, 6, 5, 0, 4, 0, 8, 3, 3, 2, 8, 4, 8, 9, 7, 7, 1, 7, 7, 9, 3, 6, 3, 6, 5, 5, 8, 9, 1, 2, 9, 6, 5, 3 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

See A199370 for a guide to related sequences. The Mathematica program includes a graph.

LINKS

Table of n, a(n) for n=0..98.

EXAMPLE

x=0.429079106087839241187994995070220174702318642...

MATHEMATICA

a = 3; b = 2; c = 1;

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

Plot[{f[x], g[x]}, {x, -Pi, Pi}, {AxesOrigin -> {0, 0}}]

r = x /. FindRoot[f[x] == g[x], {x, .42, .43}, WorkingPrecision -> 110]

RealDigits[r] (* A199449 *)

CROSSREFS

Cf. A199429.

Sequence in context: A143311 A016696 A127470 * A010649 A067721 A159899

Adjacent sequences: A199446 A199447 A199448 * A199450 A199451 A199452

KEYWORD

nonn,cons

AUTHOR

Clark Kimberling, Nov 06 2011

STATUS

approved

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Last modified December 8 14:51 EST 2022. Contains 358695 sequences. (Running on oeis4.)