A198580 Decimal expansion of x>0 satisfying 3*x^2-4x=2*sin(x).
1, 7, 1, 7, 3, 6, 3, 2, 4, 5, 1, 5, 0, 8, 9, 5, 4, 2, 9, 4, 6, 3, 7, 2, 2, 9, 9, 5, 4, 5, 1, 4, 2, 4, 3, 0, 0, 2, 1, 2, 3, 3, 3, 5, 0, 7, 9, 9, 5, 0, 6, 1, 3, 5, 2, 6, 0, 8, 6, 6, 1, 2, 1, 0, 6, 8, 9, 6, 2, 0, 4, 8, 5, 3, 3, 0, 3, 9, 7, 0, 2, 1, 4, 7, 8, 9, 5, 6, 5, 6, 8, 6, 8, 2, 2, 8, 5, 6, 8
Offset: 1
Examples
1.71736324515089542946372299545142430021233350...
Crossrefs
Cf. A198414.
Programs
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Mathematica
a = 3; b = -4; c = 2; f[x_] := a*x^2 + b*x; g[x_] := c*Sin[x] Plot[{f[x], g[x]}, {x, -.2, 2}] r = x /. FindRoot[f[x] == g[x], {x, 1.7, 1.8}, WorkingPrecision -> 110] RealDigits[r] (* A198580 *)
Comments