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Re: need help with a question
Posted:
Oct 18, 2010 9:56 AM


> Prove that a! E O(aa) > > p.s (aa) is suppose to be "a to the power of a"
Does this mean that a! (a factorial) is bounded by some positive constant K times a^a (where a^a is standard for a to the power a)?
Usually to say that f(x) = O(g(x)) as x > infinity means there is a positive constant K such that (for x sufficiently large) f(x) <= k*g(x).
You may want to look up Serling's approximation to n!. It gives an asymptotic estimate of n! which may be of use to answer your question.



