Evaluate $\int_{0}^{\infty} \cos(x^2)dx $
3068
Evaluating $\int_0^\infty \sin x^2\, dx$ with real methods?
111775
$\int_{-\infty}^{+\infty} e^{-x^2} dx$ with complex analysis
130668
Evaluating the integral with trigonometric integrand
65028
Evaluate $\int\frac {\csc^2{x}-2005}{\cos^{2005}{x}} dx $
123694
How to compute the integral $\int_{0}^{\infty} \frac{x^{1/3}}{1+x^{2}} \ dx$
75423
Computing $\int_0^\infty\frac{1}{(1+x^{2015})(1+x^2)}$
127001
Evaluate $\lim_{x\to \infty} \cos (\sqrt {x+1})-\cos (\sqrt x)$
35861
Evaluate $\int_0^\infty\frac{\ln x}{1+x^2}dx$
64480
How do I find $\int_{0}^{\infty} \frac{\sin^4 x}{x^2}\,dx$?
51488
Evaluating $\int^\pi_{-\pi} \cos^3(x) \cos(ax)~dx$
104138
How to integrate $\int\limits_0^\infty e^{-a x^2}\cos(b x) dx$ where $a>0$
141892
How to evaluate $\int_0^\infty \frac{1}{x^n+1} dx$
81831
Evaluate $\int_0^{\infty}\frac{\log x}{1+e^x}\,dx$
91196
Complex Integration of $\int_0^\infty e^{-ax}\cos(bx)\,dx$
51787
Evaluate $\int \cos(3x) \sin(2x) \, dx$.
96191
Integral $\int_0^{\infty} \sin(x^2)/x^2\,dx$
27002
Evaluating $\int\limits_0^{\pi} \frac{dx}{1+2\sin^2x}$