cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A200598 Decimal expansion of least x>0 satisfying 3*x^2-4*x+3=tan(x).

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%I A200598 #6 Feb 07 2025 16:44:07
%S A200598 1,1,8,7,6,3,8,0,2,6,3,5,4,6,0,3,9,8,2,4,4,7,2,9,1,0,9,8,0,4,2,1,6,2,
%T A200598 2,3,5,9,7,1,6,3,7,8,6,7,2,8,0,3,5,9,3,3,0,8,6,2,7,8,7,7,8,3,6,0,1,7,
%U A200598 6,1,1,5,1,3,9,3,9,3,9,6,3,9,6,3,7,2,6,0,7,3,1,6,4,3,4,5,3,6,2
%N A200598 Decimal expansion of least x>0 satisfying 3*x^2-4*x+3=tan(x).
%C A200598 See A200338 for a guide to related sequences. The Mathematica program includes a graph.
%e A200598 x=1.18763802635460398244729109804216223597163786...
%t A200598 a = 3; b = -4; c = 3;
%t A200598 f[x_] := a*x^2 + b*x + c; g[x_] := Tan[x]
%t A200598 Plot[{f[x], g[x]}, {x, -.1, Pi/2}, {AxesOrigin -> {0, 0}}]
%t A200598 r = x /. FindRoot[f[x] == g[x], {x, 1.1, 1.2}, WorkingPrecision -> 110]
%t A200598 RealDigits[r]   (* A200598 *)
%Y A200598 Cf. A200338.
%K A200598 nonn,cons
%O A200598 1,3
%A A200598 _Clark Kimberling_, Nov 19 2011