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A199599 Decimal expansion of x>0 satisfying x^2+x*cos(x)=4*sin(x). 2
2, 1, 2, 5, 9, 8, 6, 5, 4, 9, 9, 7, 7, 7, 0, 3, 0, 4, 2, 5, 1, 2, 1, 6, 2, 5, 5, 7, 8, 8, 0, 4, 3, 1, 8, 4, 7, 2, 1, 0, 0, 7, 9, 4, 1, 4, 4, 8, 1, 7, 8, 7, 8, 7, 7, 6, 3, 0, 8, 5, 5, 5, 2, 6, 5, 9, 0, 7, 3, 8, 7, 4, 2, 9, 2, 8, 5, 4, 4, 8, 2, 8, 5, 5, 0, 2, 4, 6, 7, 5, 6, 2, 4, 7, 5, 7, 8, 3, 8 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
See A199597 for a guide to related sequences. The Mathematica program includes a graph.
LINKS
EXAMPLE
x=2.1259865499777030425121625578804318472100...
MATHEMATICA
a = 1; b = 1; c = 4;
f[x_] := a*x^2 + b*x*Cos[x]; g[x_] := c*Sin[x]
Plot[{f[x], g[x]}, {x, -Pi, Pi}, {AxesOrigin -> {0, 0}}]
r = x /. FindRoot[f[x] == g[x], {x, 2.12, 2.13}, WorkingPrecision -> 110]
RealDigits[r] (* A199599 *)
CROSSREFS
Cf. A199597.
Sequence in context: A006702 A129394 A214899 * A201163 A049901 A117715
KEYWORD
nonn,cons
AUTHOR
Clark Kimberling, Nov 08 2011
STATUS
approved

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Last modified March 28 10:55 EDT 2024. Contains 371241 sequences. (Running on oeis4.)