A198939 Decimal expansion of x>0 satisfying 3*x^2-4*cos(x)=1.

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

Offset

1,4

Comments

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

Links

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

Example

x=1.017085503374383130722072016771626089566461...

Mathematica

a = 3; b = -4; c = 1;
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, 1.01, 1.02}, WorkingPrecision -> 110]
RealDigits[r] (* A198939 *)

Crossrefs

Cf. A198755.

Sequence in context: A117013 A176015 A322910 * A290372 A190410 A283881

Adjacent sequences: A198936 A198937 A198938 * A198940 A198941 A198942

Keyword

nonn,cons

Author

Clark Kimberling, Nov 01 2011

Status

approved