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A200639 Decimal expansion of least x>0 satisfying x^2+5=tan(x). 1
1, 4, 2, 9, 7, 7, 9, 1, 8, 9, 1, 9, 0, 6, 0, 7, 6, 4, 8, 7, 2, 8, 6, 6, 8, 9, 1, 7, 2, 2, 2, 1, 3, 4, 2, 4, 9, 2, 0, 7, 9, 5, 2, 2, 5, 8, 4, 8, 0, 0, 0, 2, 9, 9, 9, 7, 5, 0, 4, 0, 7, 7, 4, 9, 5, 6, 6, 3, 0, 1, 2, 5, 2, 3, 2, 0, 5, 0, 3, 9, 5, 7, 4, 5, 4, 6, 1, 0, 8, 7, 0, 3, 9, 9, 0, 1, 4, 3, 2 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

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

LINKS

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

EXAMPLE

x=1.42977918919060764872866891722213424920795225848000...

MATHEMATICA

a = 1; c = -5;

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, 1.41, 1.42}, WorkingPrecision -> 110]

RealDigits[r]    (* A200639 *)

CROSSREFS

Cf. A200338.

Sequence in context: A260422 A237126 A246380 * A243968 A104583 A278103

Adjacent sequences:  A200636 A200637 A200638 * A200640 A200641 A200642

KEYWORD

nonn,cons

AUTHOR

Clark Kimberling, Nov 20 2011

STATUS

approved

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Last modified March 26 10:57 EDT 2019. Contains 321491 sequences. (Running on oeis4.)