Using the integral test for convergence, it is quite obvious that the series $\sum_{k=1}^{\infty} k e^{- k^2}$ converges. How do we evaluate the series?
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Does it have a "closed form"? – Angina Seng Jun 06 '19 at 05:07
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@LordSharktheUnknown I fixed it – ShaoyuPei Jun 06 '19 at 05:11