A198563 Decimal expansion of x>0 having 3*x^2-2x=4*sin(x).
1, 5, 3, 4, 8, 2, 4, 8, 6, 7, 5, 8, 2, 1, 6, 4, 9, 3, 3, 6, 2, 4, 8, 2, 8, 4, 7, 7, 8, 0, 5, 9, 3, 7, 8, 8, 8, 9, 1, 1, 1, 7, 0, 8, 5, 1, 9, 8, 6, 7, 4, 7, 6, 3, 5, 9, 7, 5, 0, 9, 1, 6, 5, 2, 2, 2, 2, 1, 1, 1, 7, 5, 0, 6, 9, 9, 1, 9, 0, 4, 8, 7, 5, 4, 7, 6, 9, 4, 7, 9, 8, 3, 4, 6, 5, 2, 6, 8, 6
Offset: 1
Examples
1.5348248675821649336248284778059378889111...
Crossrefs
Cf. A198414.
Programs
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Mathematica
a = 3; b = -2; c = 4; f[x_] := a*x^2 + b*x; g[x_] := c*Sin[x] Plot[{f[x], g[x]}, {x, -.2, 1.7}] r = x /. FindRoot[f[x] == g[x], {x, 1.53, 1.54}, WorkingPrecision -> 110] RealDigits[r] (* A198563 *)
Comments