How to solve this irrational integral
89320
Problem with indefinite integration
84858
Indefinite INTEGRAL fraction
141516
Solve $\int_0^{+\infty} \Big(\frac{\sin t}{t}\Big)^2 \ dt$
34565
How do I differentiate this integral?
8934
How do I solve this improper integral: $\int_{-\infty}^\infty e^{-x^2-x}dx$?
154219
Help with integral $\int\frac{1}{\sqrt{\tan x}}dx$
149723
Can I have some assistance in proving this integral?
51216
Different ways to tackle the integral $\int_0^1\sqrt\frac x{1-x}\,dx$
105260
How to integrate $\int\sqrt{x^2+1}dx$
125069
Help with $\int \frac 1{\sqrt{a^2 - x^2}} \mathrm dx$
39629
Indefinite integration of $\int \frac{1}{1+\sqrt{x^2+2x+2}}dx$
1516
How did you prove this integral?
119410
Solution of $\int_0^\infty\frac{\ln(1+{x^2})}{1+{x^2}}$
8642
Calculate $ \int_{-2}^{0} \frac{x}{\sqrt{e^x+(x+2)^2}} dx $
71700
How to solve $\int_0^\pi{\frac{\cos{nx}}{5 + 4\cos{x}}}dx$?
17115
Please tell me how to evaluate this integral.
111094
Help with proving that $\pi$ is irrational