Double factorial [wp34s]
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02-14-2016, 04:55 PM
(This post was last modified: 02-14-2016 05:15 PM by Gerson W. Barbosa.)
Post: #22
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RE: Double factorial [wp34s]
(02-14-2016 03:24 PM)John Keith Wrote: Hi Gerson, Hi John, That is known as xmin, the value at which the Γ function is minimum for positive arguments. Just submit the result you've found to Wolfram Alpha and take a look at the first possible closed form. I ought to have provided the links previously, but I wanted to sparkle some curiosity. By the way, the equation can be written more compactly as x^2*(x^2 + x + 1)*(x^6 + x^3 + 1)*(x^18 + x^9 + 1) - 130615 = 0 Thanks for asking! Gerson. P.S.: By 13 SD I meant the approximation was good to 13 significant digits. Sorry for the confusion! P.P.S.: I'd completely forgotten about an old thread started by Barry Mead. I think it should also be worth taking a look at: http://www.hpmuseum.org/forum/thread-2508.html |
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