Can anyone help me solve this?

\int_{0}^{e^{x}}sin^{3}(t)dt

Rewrite as:

\int_{0}^{e^{x}}sin(t)(sin^{2}(t))dt

\int_{0}^{e^{x}}sin(t)(1-cos^{2}(t))dt

Now, let u=cos(t), \;\ du = -sin(t)dt

Can you finish?