A198881 Decimal expansion of x>0 satisfying 2*x^2-3*cos(x)=3.

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

Offset

1,2

Comments

See A198755 for a guide to related sequences. The Mathematica program includes a graph.

Links

Table of n, a(n) for n=1..101.

Example

x=1.351442892942079049695554780366304939383122...

Mathematica

a = 2; b = -3; c = 3;
f[x_] := a*x^2 + b*Cos[x]; g[x_] := c
Plot[{f[x], g[x]}, {x, -2, 2}, {AxesOrigin -> {0, 0}}]
r = x /. FindRoot[f[x] == g[x], {x, 1.35, 1.36}, WorkingPrecision -> 110]
RealDigits[r] (* A198881 *)

Crossrefs

Cf. A198755.

Sequence in context: A335960 A248916 A030311 * A318488 A256598 A378025

Adjacent sequences: A198878 A198879 A198880 * A198882 A198883 A198884

Keyword

nonn,cons

Author

Clark Kimberling, Oct 31 2011

Status

approved