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bostoner (bostoner) 于 (Thu Sep 20 12:52:50 2007) 提到:
Let X be a random variable. What is bigger, E(e^X) or e^(E(X))?
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laridoff (波拿巴) 于 (Thu Sep 20 12:55:53 2007) 提到:
Jensen inequality
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bostoner (bostoner) 于 (Thu Sep 20 13:00:44 2007) 提到:
got it
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blook (布鲁克) 于 (Thu Sep 20 13:33:09 2007) 提到:
I'd like to write it out.
E[e^x
