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A133839
Decimal expansion of first inflection point of Planck's radiation function.
4
1, 1, 8, 4, 1, 9, 7, 2, 3, 7, 6, 6, 7, 2, 9, 7, 1, 5, 3, 9, 5, 4, 7, 3, 4, 9, 5, 7, 3, 7, 1, 1, 0, 6, 0, 2, 6, 3, 2, 5, 5, 9, 8, 0, 5, 1, 7, 3, 5, 7, 6, 1, 7, 2, 6, 5, 6, 4, 1, 5, 9, 4, 4, 8, 2, 0, 3, 0, 7, 0, 1, 0, 4, 3, 2, 7, 5, 3, 1, 6, 7, 2, 0, 9, 5, 3, 8, 5, 8, 7, 7, 1, 5, 5, 7, 5, 3, 9, 1, 0, 4, 0, 3, 0, 2
OFFSET
0,3
LINKS
Eric Weisstein's World of Mathematics, Planck's Radiation Function
EXAMPLE
0.11841972376672971539...
MATHEMATICA
f[x_] := 1/(x^5*(E^(1/x)-1)); RealDigits[x /. FindRoot[f''[x], {x, 1/10}, WorkingPrecision -> 110], 10, 105][[1]] (* Amiram Eldar, Sep 08 2020 *)
CROSSREFS
Sequence in context: A154527 A145435 A197477 * A080828 A131916 A131606
KEYWORD
nonn,cons
AUTHOR
Eric W. Weisstein, Sep 26 2007
STATUS
approved