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A201764
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Decimal expansion of the greatest x satisfying -x^2+8=e^x.
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3
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1, 6, 5, 8, 2, 6, 0, 7, 2, 0, 4, 5, 2, 4, 9, 8, 8, 7, 8, 7, 9, 6, 3, 8, 4, 3, 7, 9, 6, 4, 6, 4, 5, 2, 5, 6, 4, 3, 4, 8, 2, 8, 5, 7, 0, 8, 4, 4, 4, 2, 2, 7, 3, 0, 9, 1, 1, 5, 4, 0, 2, 8, 3, 5, 2, 2, 7, 6, 1, 8, 9, 0, 1, 2, 8, 8, 9, 4, 1, 0, 6, 5, 4, 4, 8, 8, 5, 6, 1, 7, 1, 8, 5, 8, 5, 8, 5, 7, 3
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OFFSET
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1,2
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COMMENTS
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See A201741 for a guide to related sequences. The Mathematica program includes a graph.
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LINKS
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EXAMPLE
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least: -2.8178476944165736893772740965040641282283...
greatest: 1.65826072045249887879638437964645256434...
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MATHEMATICA
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a = -1; b = 0; c = 8;
f[x_] := a*x^2 + b*x + c; g[x_] := E^x
Plot[{f[x], g[x]}, {x, -3, 3}, {AxesOrigin -> {0, 0}}]
r = x /. FindRoot[f[x] == g[x], {x, -2.8, -2.9}, WorkingPrecision -> 110]
r = x /. FindRoot[f[x] == g[x], {x, 1.6, 1.7}, WorkingPrecision -> 110]
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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