A199663 Decimal expansion of x>0 satisfying 3*x^2+x*cos(x)=2*sin(x).
3, 3, 9, 6, 3, 1, 2, 6, 0, 3, 1, 9, 1, 7, 8, 8, 7, 5, 3, 6, 7, 4, 6, 6, 6, 6, 2, 4, 7, 8, 8, 0, 8, 0, 5, 3, 1, 0, 7, 7, 8, 8, 4, 2, 3, 0, 7, 5, 8, 5, 8, 3, 6, 7, 9, 4, 4, 2, 5, 8, 9, 3, 3, 9, 1, 4, 2, 6, 9, 0, 4, 8, 9, 8, 1, 0, 0, 4, 4, 8, 4, 3, 5, 4, 8, 0, 0, 1, 3, 6, 6, 3, 6, 7, 4, 9, 2, 5, 2
Offset: 0
Examples
0.3396312603191788753674666624788080...
Crossrefs
Cf. A199597.
Programs
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Mathematica
a = 3; b = 1; c = 2; f[x_] := a*x^2 + b*x*Cos[x]; g[x_] := c*Sin[x] Plot[{f[x], g[x]}, {x, -1, 1}, {AxesOrigin -> {0, 0}}] r = x /. FindRoot[f[x] == g[x], {x, .33, .34}, WorkingPrecision -> 110] RealDigits[r] (* A199663 *)
Comments