A200700 Decimal expansion of least x>0 satisfying 1-5*x^2=tan(x).

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

Offset

0,1

Comments

See A200614 for a guide to related sequences. The Mathematica program includes a graph.

Links

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

Example

x=0.3548228659859907577765288719501368434152424...

Mathematica

a = -5; c = 1;
f[x_] := a*x^2 + c; g[x_] := Tan[x]
Plot[{f[x], g[x]}, {x, -.1, Pi/2}, {AxesOrigin -> {0, 0}}]
r = x /. FindRoot[f[x] == g[x], {x, .3, .4}, WorkingPrecision -> 110]
RealDigits[r]   (* A200700 *)

Crossrefs

Cf. A200338.

Sequence in context: A210195 A069918 A361709 * A356377 A075380 A349374

Adjacent sequences: A200697 A200698 A200699 * A200701 A200702 A200703

Keyword

nonn,cons

Author

Clark Kimberling, Nov 21 2011

Status

approved