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A201589
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Decimal expansion of least x satisfying 5*x^2 = csc(x) and 0 < x < Pi.
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3
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5, 9, 6, 6, 2, 6, 8, 1, 9, 8, 6, 0, 7, 0, 4, 5, 4, 6, 7, 6, 1, 8, 3, 2, 8, 5, 9, 0, 8, 2, 1, 4, 1, 0, 4, 8, 3, 0, 3, 6, 5, 3, 1, 0, 0, 8, 7, 0, 2, 9, 3, 0, 5, 7, 4, 4, 7, 1, 8, 2, 0, 4, 7, 7, 5, 8, 3, 7, 4, 7, 8, 6, 0, 6, 4, 1, 9, 9, 1, 6, 3, 4, 1, 9, 4, 0, 7, 6, 9, 5, 4, 7, 5, 8, 8, 9, 5, 2, 2, 7, 8
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OFFSET
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0,1
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COMMENTS
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See A201564 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: 0.596626819860704546761832859082141048303653100...
greatest: 3.121059463523827415360175700034092048910749...
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MATHEMATICA
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a = 5; c = 0;
f[x_] := a*x^2 + c; g[x_] := Csc[x]
Plot[{f[x], g[x]}, {x, 0, Pi}, {AxesOrigin -> {0, 0}}]
r = x /. FindRoot[f[x] == g[x], {x, .5, .6}, WorkingPrecision -> 110]
r = x /. FindRoot[f[x] == g[x], {x, 3.1, 3.14}, WorkingPrecision -> 110]
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PROG
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(PARI) a=5; c=0; solve(x=0.5, 1, a*x^2 + c - 1/sin(x)) \\ G. C. Greubel, Aug 22 2018
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CROSSREFS
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KEYWORD
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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