A199160 Decimal expansion of x<0 satisfying 3*x^2+3*sin(x)=2.

1, 2, 7, 3, 9, 4, 1, 9, 1, 9, 4, 1, 1, 5, 8, 3, 3, 2, 7, 0, 3, 4, 0, 8, 4, 7, 4, 3, 4, 2, 0, 5, 5, 6, 4, 3, 5, 0, 6, 1, 2, 3, 1, 9, 6, 7, 6, 0, 7, 9, 9, 5, 6, 6, 7, 9, 1, 1, 7, 0, 7, 2, 4, 3, 0, 1, 8, 8, 8, 5, 2, 0, 2, 7, 1, 7, 7, 1, 6, 1, 8, 8, 7, 3, 5, 7, 7, 5, 9, 0, 0, 0, 6, 9, 7, 4, 9, 2, 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: -1.27394191941158332703408474342055643506123...
positive:  0.466106421683196411148081035304500630437462...

Mathematica

a = 3; b = 3; c = 2;
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, -1.3, -1.2}, WorkingPrecision -> 110]
RealDigits[r]  (* A199160 *)
r = x /. FindRoot[f[x] == g[x], {x, .46, .47}, WorkingPrecision -> 110]
RealDigits[r]  (* A199161 *)

Crossrefs

Cf. A198866.

Sequence in context: A196392 A021789 A348721 * A091694 A086310 A115949

Adjacent sequences: A199157 A199158 A199159 * A199161 A199162 A199163

Keyword

nonn,cons

Author

Clark Kimberling, Nov 03 2011

Status

approved