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 Dec18 awarded Popular Question Apr12 awarded Revival Dec15 awarded Yearling Feb27 answered How to find Laplace Transform Feb26 answered A not too simple complex number inequality Feb24 answered Laplace Transform of a Geometric Series Feb24 answered Laplace-like operator Jan1 answered Study continuity of this function Dec30 awarded Benefactor Dec29 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 Dec29 comment Conformal mapping from upper half plane onto unit square Do you mean the unit square :$$\mid Re(z) \mid < 1 \space and \space \mid Re(z) \mid <1 ?$$ Dec29 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. Dec29 revised Graphing $r =2\sin(2\theta)$ added 1 characters in body Dec29 revised Graphing $r =2\sin(2\theta)$ added 243 characters in body Dec29 answered Graphing $r =2\sin(2\theta)$ Dec29 answered Inverse Laplace transform of $\frac{\log(s)}{1 + s}$ Dec28 awarded Autobiographer Dec27 revised Laplace Transform of $f(x)=\frac{\sqrt{x}}{1+x}$ added 12 characters in body Dec27 answered Another residue theory integral Dec27 revised Calculating this residue (residue theorem) edited body