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.

A198924 Decimal expansion of x>0 satisfying 3*x^2-cos(x)=2.

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%I A198924 #10 Feb 07 2025 17:48:25
%S A198924 9,3,0,4,9,0,9,7,0,4,9,3,6,2,2,7,5,6,5,8,4,6,2,8,0,6,6,9,7,0,8,3,4,7,
%T A198924 9,9,3,6,4,1,0,7,6,1,2,0,0,7,9,8,2,3,2,4,7,5,4,8,1,4,7,9,5,6,8,2,9,0,
%U A198924 7,5,3,3,3,4,4,0,2,8,9,4,2,2,6,6,2,8,4,2,0,7,7,1,1,9,5,6,4,6,8,9,5,6,9
%N A198924 Decimal expansion of x>0 satisfying 3*x^2-cos(x)=2.
%C A198924 See A198755 for a guide to related sequences. The Mathematica program includes a graph.
%H A198924 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>.
%e A198924 0.930490970493622756584628066970834799...
%t A198924 a = 3; b = -1; c = 2;
%t A198924 f[x_] := a*x^2 + b*Cos[x]; g[x_] := c
%t A198924 Plot[{f[x], g[x]}, {x, -2, 2}, {AxesOrigin -> {0, 0}}]
%t A198924 r = x /. FindRoot[f[x] == g[x], {x, .93, .94}, WorkingPrecision -> 110]
%t A198924 RealDigits[r] (* A198924 *)
%Y A198924 Cf. A198755.
%K A198924 nonn,cons
%O A198924 0,1
%A A198924 _Clark Kimberling_, Oct 31 2011