A199270 - OEIS

A199270

Decimal expansion of x > 0 satisfying 2*x^2 + 2*x*cos(x) = 1.

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

(list; constant; graph; refs; listen; history; text; internal format)

OFFSET

0,1

COMMENTS

See A199170 for a guide to related sequences. The Mathematica program includes a graph.

LINKS

Table of n, a(n) for n=0..98.

EXAMPLE

negative: -1.017240798342455566560350070545346176017411...

positive: 0.381748420992985957918521611823486645593341...

MATHEMATICA

a = 2; b = 2; c = 1;