|
|
A198110
|
|
Decimal expansion of x>0 having 2*x^2=cos(x).
|
|
2
|
|
|
6, 3, 4, 5, 5, 9, 9, 4, 5, 5, 2, 6, 6, 2, 2, 7, 4, 0, 0, 6, 7, 7, 6, 8, 3, 4, 3, 7, 6, 9, 8, 5, 4, 4, 8, 0, 3, 0, 7, 5, 7, 1, 6, 7, 8, 2, 2, 5, 1, 8, 8, 3, 6, 2, 1, 7, 7, 0, 5, 1, 5, 4, 1, 6, 2, 5, 6, 9, 3, 7, 6, 9, 2, 8, 9, 1, 9, 5, 4, 3, 1, 2, 9, 7, 3, 0, 1, 4, 0, 1, 9, 5, 5, 1, 3, 1, 8, 3, 1
(list;
constant;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,1
|
|
COMMENTS
|
See A197737 for a guide to related sequences. The Mathematica program includes a graph.
|
|
LINKS
|
|
|
EXAMPLE
|
x=0.6345599455266227400677683437698...
|
|
MATHEMATICA
|
a = 2; b = 0; c = 1;
f[x_] := a*x^2 + b*x; g[x_] := c*Cos[x]
Plot[{f[x], g[x]}, {x, -1, 1}]
r = x /. FindRoot[f[x] == g[x], {x, 0.63, 0.64}, WorkingPrecision -> 110]
|
|
CROSSREFS
|
|
|
KEYWORD
|
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|