Calculation of an improper integral in the context of complex functions
100485
How do I evaluate the integral $\int_0^{\infty}\frac{x^5\sin(x)}{(1+x^2)^3}dx$?
111775
$\int_{-\infty}^{+\infty} e^{-x^2} dx$ with complex analysis
58013
Integral of Even and Odd functions
104904
Calculating $\int_0^\infty \frac {\sin^2x}{x^2}dx$ using the Residue Theorem.
29383
Computing $\int_{-\infty}^{\infty} \frac{\cos x}{x^{2} + a^{2}}dx$ using residue calculus
102636
Contour Integral: $\int^{\infty}_{0}(1+z^n)^{-1}dz$
119898
necessary condition of improper integral
84765
Evaluating $\int_{-\infty}^{\infty}\frac{1}{(x^2+b^2)^2}dx$
100711
$\int_{-\infty}^{\infty}e^{-zt^2 + 2wt} \ dt = e^{w^2 / z} \sqrt{\frac{\pi}{z}}$ for $z,w \in \mathbb{C}, Re(z) > 0$
101174
A closed form for a triple integral with sines and cosines
123532
An incorrect answer for an integral
83191
improper integrals (comparison theorem)
61079
How to see this improper integral diverges?
145183
finding $\int_0^\infty \dfrac{dx}{1+x^4}$ through complex analysis
41447
tough integral involving $\sin(x^2)$ and $\sinh^2 (x)$
93071
Is there a way to calculate the improper integral $\int_0^\infty \big(\frac{\ln x}{x - 1}\big)^2 dx$?
80952
A difficult integral evaluation problem