How can I start with this integral?
50471
Evaluate $\int\frac1{1+x^n}dx$ for $n\in\mathbb R$
117101
Integrate $\int \frac{dx}{\sqrt{-ax^2 + bx +c}} $
18672
Integrate $\int_{0}^{\pi}{\frac{x\cos{x}}{1+\sin^{2}{x}}dx}$
152358
integration using residue
67629
How to evaluate these indefinite integrals with $\sqrt{1+x^4}$?
130668
Evaluating the integral with trigonometric integrand
53438
I need assistance in integrating $ \frac{x \sin x}{1+(\cos x)^2}$
67533
A question on integration
95934
How to integrate $\int\frac{1}{\sqrt{1+x^3}}\mathrm dx$?
123663
General integral to find resistance
42992
How do I integrate the following? $\int{\frac{(1+x^{2})\mathrm dx}{(1-x^{2})\sqrt{1+x^{4}}}}$
66304
How to evaluate these integrals by hand
141711
Evaluate the following integral?
31227
Find the indefinite integral $\int {dx \over {(1+x^2) \sqrt{1-x^2}}} $
1516
How did you prove this integral?
109639
complex integration, how to evaluate it?
146579
What is the right first step to take when integrating $1/(2+ \sin x + \cos x)$?