Evaluate the integral of $\int_0^\infty \frac{k}{(1+x)^4} \, dx$
38400
Evaluating a PDF to find an unkown constant
83325
Integral of $\frac{\sqrt{x^2+1}}{x}$
140203
Find the value of $\int_{-\infty}^{\infty} \frac{e^{-x^2}}{1+x^2} dx$ .
65982
Evaluate the improper integral $ \int_0^1 \frac{\ln(1+x)}{x}\,dx $
69978
Evaluating $\int_1^\infty \frac{1}{x(x^2+1)}\ dx$
123694
How to compute the integral $\int_{0}^{\infty} \frac{x^{1/3}}{1+x^{2}} \ dx$
27195
Evaluating $\int_{0}^{1}\frac{1-x}{1+x}\frac{\mathrm dx}{\ln x}$
156531
Evaluating the integral $\int_{-\infty}^\infty \frac{\sin^2(x)}{x^2}e^{i t x} dx$
5537
Closed form for $ \int_0^\infty {\frac{{{x^n}}}{{1 + {x^m}}}dx }$
63863
Evaluate: $\sum_{n=1}^{\infty}\frac{1}{n k^n}$
77721
Is it possible to compute $\int_1^{+ \infty} \frac{dx}{x^2(1+e^x)}$?
72039
Compute $\int_0^\infty\frac{\cos(xt)}{1+t^2}dt$
93759
Evaluate $\int_{0}^{\infty} \frac{e^{ax}-e^{bx}}{(1+e^{ax})(1+e^{bx})} dx$
33005
How to evaluate $\int_{0}^{+\infty}\exp(-ax^2-\frac b{x^2})\,dx$ for $a,b>0$
42758
How to find $ \int_0^\infty \dfrac x{1+e^x}\ dx$
32312
Evaluating the integral $\int \frac{x^2+x}{(e^x+x+1)^2}dx$
75423
Computing $\int_0^\infty\frac{1}{(1+x^{2015})(1+x^2)}$