Evaluate $ \int_0^\infty \cos(x)/\cosh(x) dx $
66304
How to evaluate these integrals by hand
111636
Finding $\lim_{n\to\infty}\int_0^{\frac{1}{2^n}}(1+\cos(x))^n\,dx$
47923
For $n\in\mathbb{N}$, evaluate $\int_0^n \cos(2\pi \lfloor x\rfloor\{x\})dx$
141892
How to evaluate $\int_0^\infty \frac{1}{x^n+1} dx$
100180
Evaluate the integral $\int_0^\infty \frac{dx}{\sqrt{(x^3+a^3)(x^3+b^3)}}$
65028
Evaluate $\int\frac {\csc^2{x}-2005}{\cos^{2005}{x}} dx $
3068
Evaluating $\int_0^\infty \sin x^2\, dx$ with real methods?
133160
Closed form for $\int_0^\infty\frac{1}{(1+x^2)^s}\,dx$ when $s\in (0.5,\infty)\setminus\mathbb{N}$
84765
Evaluating $\int_{-\infty}^{\infty}\frac{1}{(x^2+b^2)^2}dx$
6416
How can I evaluate $\sum_{n=0}^\infty(n+1)x^n$?
124463
Integral from $0$ to $\infty$ of $\ln(x)/e^x$
35861
Evaluate $\int_0^\infty\frac{\ln x}{1+x^2}dx$
148826
Integral of $ 1 \, / \, (1 + a \, \cos(x) )$
9926
About the relation between $\int_{0}^{\infty}\frac{\cosh((\alpha-\beta)x)}{(\cosh(x))^{\alpha+\beta }} \,dx$ and $B(\alpha,\beta)$
144039
Computing $ \int_0^{\infty} \frac{ \sqrt [3] {x+1}-\sqrt [3] {x}}{\sqrt{x}} \mathrm dx$
70830
How to evaluate $\int_{0}^{\infty}\exp(-x^2-1/x^2)dx$?
151563
Evaluate: $\int_{0}^{\pi}\frac{\cos 2017x}{5-4\cos x}dx$