A199075 Decimal expansion of x<0 satisfying 2*x^2+3*sin(x)=3.

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

Offset

1,2

Comments

See A198866 for a guide to related sequences. The Mathematica program includes a graph.

Links

Table of n, a(n) for n=1..99.

Example

negative: -1.72678532237109319694171416856349946617...
positive:  0.71708638918192182669700429533330771873...

Mathematica

a = 2; b = 3; c = 3;
f[x_] := a*x^2 + b*Sin[x]; g[x_] := c
Plot[{f[x], g[x]}, {x, -2, 2}, {AxesOrigin -> {0, 0}}]
r = x /. FindRoot[f[x] == g[x], {x, -1.8, -1.7}, WorkingPrecision -> 110]
RealDigits[r] (* A199075 *)
r = x /. FindRoot[f[x] == g[x], {x, .71, .72}, WorkingPrecision -> 110]
RealDigits[r] (* A199076 *)

Crossrefs

Cf. A198866.

Sequence in context: A182548 A322933 A143306 * A228045 A011361 A199433

Adjacent sequences: A199072 A199073 A199074 * A199076 A199077 A199078

Keyword

nonn,cons

Author

Clark Kimberling, Nov 03 2011

Status

approved