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A200604 Decimal expansion of least x>0 satisfying 4*x^2-2*x+1=tan(x). 2
1, 4, 0, 8, 8, 8, 1, 6, 6, 6, 0, 4, 8, 5, 8, 3, 9, 9, 3, 2, 7, 2, 3, 6, 4, 4, 1, 8, 8, 3, 4, 3, 4, 8, 8, 5, 8, 0, 9, 5, 2, 3, 6, 7, 5, 5, 6, 2, 6, 5, 4, 6, 8, 7, 5, 5, 9, 5, 5, 3, 9, 8, 2, 9, 2, 8, 9, 6, 3, 3, 3, 6, 0, 0, 9, 4, 8, 1, 5, 9, 4, 1, 1, 7, 1, 5, 8, 1, 5, 3, 9, 9, 1, 6, 9, 5, 6, 6, 6 (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=1.408881666048583993272364418834348858095236...

MATHEMATICA

a = 4; b = -2; 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, 1.4, 1.5}, WorkingPrecision -> 110]

RealDigits[r]    (* A200604 *)

CROSSREFS

Cf. A200338.

Sequence in context: A176534 A154847 A165738 * A309038 A159468 A010769

Adjacent sequences:  A200601 A200602 A200603 * A200605 A200606 A200607

KEYWORD

nonn,cons

AUTHOR

Clark Kimberling, Nov 19 2011

STATUS

approved

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Last modified January 22 04:27 EST 2020. Contains 331133 sequences. (Running on oeis4.)