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 Sep 3 awarded Revival Aug 1 awarded Yearling Dec 18 awarded Popular Question Apr 12 awarded Revival Dec 15 awarded Yearling Feb 27 answered How to find Laplace Transform Feb 26 answered A not too simple complex number inequality Feb 24 answered Laplace Transform of a Geometric Series Feb 24 answered Laplace-like operator Jan 1 answered Study continuity of this function Dec 30 awarded Benefactor Dec 29 comment Where have I gone wrong? Contour integration $\int_{-a}^a {u\over 1+u+u^2} du$ as $a\to \infty$ (+1) Nice Answer Dec 29 comment Conformal mapping from upper half plane onto unit square Do you mean the unit square :$$\mid Re(z) \mid < 1 \space and \space \mid Re(z) \mid <1 ?$$ Dec 29 comment Why is the sum of residues of $\frac{1}{1+z^n}$ in the upper half plane $1/[in\sin(\pi/n)]$? @Antonio Vargas : I can't understand why k must be between 0 and n/2-1, please help me. Dec 29 revised Graphing $r =2\sin(2\theta)$ added 1 characters in body Dec 29 revised Graphing $r =2\sin(2\theta)$ added 243 characters in body Dec 29 answered Graphing $r =2\sin(2\theta)$ Dec 29 answered Inverse Laplace transform of $\frac{\log(s)}{1 + s}$ Dec 28 awarded Autobiographer Dec 27 revised Laplace Transform of $f(x)=\frac{\sqrt{x}}{1+x}$ added 12 characters in body