trouble understanding some parts of integration,
8408
What is $dx$ in integration?
31587
Finding a difficult integral
83488
Integrating $\ln x$ by parts
149910
interpreting triple integrals
141999
How to integrate this nasty integral
38935
What is integration by parts, really?
46833
How to solve integration by parts
32657
What is the value of this Integration?
56394
What should be the limits in this integration
34565
How do I differentiate this integral?
112189
Discontinuity in function; order of integration matters
73131
Derivation of the gaussian integral
139784
Computing integration $\int_0^1\frac{\ln x}{1-x}d x$
110394
For which values this integral converge?
63016
Integration of $\int\frac{1}{x^{4}+1}\mathrm dx$
104691
Integration of $\int_{0}^{1} \frac{x^k}{1-x} dx$
99457
How to integrate $\int x\sin {(\sqrt{x})}\, dx$