Validity of Substitutions in Integrals
32642
The formalism behind integration by substitution
29476
Double integral with transformation; possible error in limits
63988
General formula for evaluating integrals of the form $\displaystyle\int_0^\infty x^ae^{-bx}dx$
98757
Solving an integral with substitution method
124677
Substitution needed for calculating an integral
63211
Replacements/Substitutions in Mathematica
52293
The equivalence of definitions Riemann integral
116778
Calculation of an integral via residue.
1234
Evaluating limits of integrals
19526
Integral of an integral with variable limits
156531
Evaluating the integral $\int_{-\infty}^\infty \frac{\sin^2(x)}{x^2}e^{i t x} dx$
124445
Integral of the form $\int_{0}^{\infty}e^{-ax}e^{-x^{4}}dx$
54008
The equivalence between Cauchy integral and Riemann integral for bounded functions
138074
Integrating the inverse of a function.
146353
Is there a way to rewrite integrals in Mathematica using u substitution?
58013
Integral of Even and Odd functions
45903
Improper integration involving complex analytic arguments