A198545 Decimal expansion of x < 0 having 4*x^2+4*x = 3*sin(x).

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

Offset

0,1

Comments

See A198414 for a guide to related sequences. The Mathematica program includes a graph.

Links

Table of n, a(n) for n=0..99.

Example

-0.258312912377523926032734073951982530...

Mathematica

a = 4; b = 4; c = 3;
f[x_] := a*x^2 + b*x; g[x_] := c*Sin[x]
Plot[{f[x], g[x]}, {x, -.3, .1}]
r = x /. FindRoot[f[x] == g[x], {x, -.26, -.25}, WorkingPrecision -> 110]
RealDigits[r] (* A198545 *)

Crossrefs

Cf. A198414.

Sequence in context: A020772 A131598 A220337 * A296430 A220398 A352633

Adjacent sequences: A198542 A198543 A198544 * A198546 A198547 A198548

Keyword

nonn,cons

Author

Clark Kimberling, Oct 26 2011

Extensions

a(86) onwards corrected by Georg Fischer, Aug 01 2021

Status

approved