11. Techniques of Integration

Find the integral.

$\int_{}^{}se^{3s}ds$

Find the integral.

$\int_{}^{}x^2\ln xdx$

Find the indefinite integral.

$\int_{}^{}r^2e^{-r}dr$

Evaluate the indefinite integral.

$\int_{}^{}\left(s^2+4\right)e^{3s}ds$