How to solve this improper integral?
717
Proof of Frullani's theorem
120425
Bizarre Definite Integral
12446
integral involving a periodic function
152358
integration using residue
100569
Evaluating the improper integral $\int_{0}^{\infty} \frac{x^3}{e^{x}-1} dx$
45903
Improper integration involving complex analytic arguments
142516
Evaluating the integral, $\int_{0}^{\infty} \ln\left(1 - e^{-x}\right) \,\mathrm dx $
11757
How can I compute the integral $\int_{0}^{\infty} \frac{dt}{1+t^4}$?
133485
How to solve $\int_0^{\infty} \frac{\log(x+\frac{1}{x})}{1+x^2}dx$?
119410
Solution of $\int_0^\infty\frac{\ln(1+{x^2})}{1+{x^2}}$
156531
Evaluating the integral $\int_{-\infty}^\infty \frac{\sin^2(x)}{x^2}e^{i t x} dx$
107146
How can i prove this problem about Cauchy integral?
124445
Integral of the form $\int_{0}^{\infty}e^{-ax}e^{-x^{4}}dx$
56394
What should be the limits in this integration
83191
improper integrals (comparison theorem)
103374
A Problem on Improper Integrals
84884
Need help with the integral $\int_{0}^\infty e^{-x^{2}}x^{2n+1}dx $