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 A198830 Decimal expansion of x>0 satisfying x^2-3*cos(x)=4. 2
 1, 8, 1, 2, 0, 0, 6, 2, 8, 9, 8, 3, 9, 4, 2, 3, 4, 2, 8, 9, 7, 7, 3, 2, 0, 9, 3, 8, 2, 4, 0, 6, 6, 7, 8, 4, 8, 6, 2, 7, 8, 5, 7, 2, 9, 8, 9, 1, 9, 1, 5, 8, 1, 1, 2, 0, 8, 2, 3, 6, 5, 5, 0, 1, 7, 8, 3, 0, 9, 3, 4, 7, 2, 9, 7, 5, 3, 6, 4, 2, 7, 1, 5, 3, 8, 6, 1, 9, 9, 7, 6, 0, 5, 9, 2, 2, 0, 0, 6 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS See A198755 for a guide to related sequences.  The Mathematica program includes a graph. LINKS EXAMPLE x=1.812006289839423428977320938240667848627857298919... MATHEMATICA a = 1; b = -3; c = 4; f[x_] := a*x^2 + b*Cos[x]; g[x_] := c Plot[{f[x], g[x]}, {x, -3, 3}, {AxesOrigin -> {0, 0}}] r = x /. FindRoot[f[x] == g[x], {x, 1.8, 1.82}, WorkingPrecision -> 110] RealDigits[r] (* A198830 *) CROSSREFS Cf. A198755. Sequence in context: A176340 A111835 A254460 * A254244 A232068 A271547 Adjacent sequences:  A198827 A198828 A198829 * A198831 A198832 A198833 KEYWORD nonn,cons AUTHOR Clark Kimberling, Oct 30 2011 STATUS approved

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Last modified January 20 13:44 EST 2021. Contains 340302 sequences. (Running on oeis4.)