Integrate the following problems
71982
Evaluating this integral $ \small\int \frac {x^2 dx} {(x\sin x+\cos x)^2} $
140295
Integral equation problem
127712
Integration (Fourier transform)
22768
Solving a double integration in parametric form
31587
Finding a difficult integral
128023
Recursive formulas and integration
130670
Solving Integrals
129318
Integrate via substitution and derivation rule
108776
How to integrate $\int \frac{ev+f}{av^2 + bv +c} dv$?
30382
Integrate full derivative
66304
How to evaluate these integrals by hand
81225
A problem about parametric integral
41738
Best way to integrate $ \int_0^\infty \frac{e^{-at} - e^{-bt}}{t} \text{d}t $
123767
How to integrate $\int \frac{1}{\cos(x)}\,\mathrm dx$
30127
Integration of sqrt Sin x dx
62266
Integrating a solution of NDSolve into table
35181
Integrals of Motion