# Can anyone explain with a simple example, what is meant by substituion method in intergration?

Jitender Singh IIT Delhi
7 years ago
Ans:
We apply substitution method when we have function & its derivative in the integrand.
Example:
$I = \int cosx.sin^{2}x.dx$
$sinx = t$
$cosx.dx = dt$
$I = \int t^{2}.dt = \frac{t^{3}}{3} + constant$
Thanks & Regards
Jitender Singh
IIT Delhi