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A199722 Decimal expansion of x>0 satisfying x^2-x*cos(x)=sin(x). 2

%I #5 Mar 30 2012 18:57:58

%S 1,1,7,3,1,4,8,3,8,0,8,5,5,4,0,4,0,7,9,5,3,5,9,8,3,2,2,6,8,7,2,9,2,2,

%T 6,3,8,8,3,5,8,6,5,0,3,2,0,0,9,5,2,8,9,8,4,1,2,5,8,8,4,1,1,2,4,3,1,2,

%U 6,8,6,4,8,6,0,3,4,7,1,1,7,9,6,5,8,1,0,0,6,8,7,5,2,5,3,9,6,8,5

%N Decimal expansion of x>0 satisfying x^2-x*cos(x)=sin(x).

%C See A199597 for a guide to related sequences. The Mathematica program includes a graph.

%e x=1.1731483808554040795359832268729226388...

%t a = 1; b = -1; c = 1;

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

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

%t r = x /. FindRoot[f[x] == g[x], {x, 1.17, 1.18}, WorkingPrecision -> 110]

%t RealDigits[r] (* A199722 *)

%Y Cf. A199597.

%K nonn,cons

%O 1,3

%A _Clark Kimberling_, Nov 09 2011

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Last modified April 19 08:45 EDT 2024. Contains 371782 sequences. (Running on oeis4.)