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A200418 Decimal expansion of least x>0 satisfying 4*x^2+3*x+1=tan(x). 2
1, 5, 0, 2, 0, 8, 7, 8, 5, 1, 4, 9, 1, 0, 8, 1, 7, 6, 6, 0, 8, 7, 7, 4, 9, 9, 1, 4, 8, 0, 8, 2, 0, 3, 0, 6, 4, 3, 7, 5, 6, 8, 0, 6, 4, 2, 3, 6, 3, 0, 6, 5, 9, 3, 2, 7, 7, 3, 5, 3, 0, 1, 0, 2, 4, 9, 4, 6, 1, 5, 0, 5, 3, 1, 2, 4, 6, 9, 1, 3, 2, 7, 8, 4, 4, 8, 3, 6, 6, 4, 7, 4, 9, 5, 3, 3, 5, 3, 2 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

See A200338 for a guide to related sequences.  The Mathematica program includes a graph.

LINKS

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

EXAMPLE

x=1.50208785149108176608774991480820306437568064236...

MATHEMATICA

a = 4; b = 3; c = 1;

f[x_] := a*x^2 + b*x + 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, 1.5, 1.51}, WorkingPrecision -> 110]

RealDigits[r]  (* A200418 *)

CROSSREFS

Cf. A200338.

Sequence in context: A267480 A099221 A200415 * A200637 A318137 A062950

Adjacent sequences:  A200415 A200416 A200417 * A200419 A200420 A200421

KEYWORD

nonn,cons

AUTHOR

Clark Kimberling, Nov 18 2011

STATUS

approved

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Last modified September 22 03:54 EDT 2020. Contains 337289 sequences. (Running on oeis4.)