8:47 AM
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I'm referring to questions from http://math.stackexchange.com/search?tab=votes&q=trick like: Lesser-known integration tricks, How do you prove that $n^n$ is $O(n!^2)$?, Ways to evaluate $\int \sec \theta \, \mathrm d \theta$, slick way of transforming an integral? If the question is about sl...

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