OFFSET
1,2
COMMENTS
See A200338 for a guide to related sequences. The Mathematica program includes a graph.
LINKS
G. C. Greubel, Table of n, a(n) for n = 1..10000
EXAMPLE
1.4768369420356295966002253324996856643...
MATHEMATICA
a = 1; b = 3; c = 4;
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] (* A200353 *)
PROG
(PARI) solve(x=1, 3/2, x^2 + 3*x + 4 - tan(x)) \\ Michel Marcus, Aug 05 2018
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Clark Kimberling, Nov 17 2011
EXTENSIONS
Terms a(90) onward corrected by G. C. Greubel, Aug 04 2018
STATUS
approved