Not sure how to compute my question into maples. Tried various ways and nothing has worked yet. Need help, I am new with Maples. Here is the problem that I am trying to enter into maples:

find arc length of space curve:

r(t)= 2e i + ecos(t) j + esin(t) k, where t is > or = 0 and < or = to ln(3). r(t), i, j, and k all have vector arrows above them.

Can anyone give me a hint on how to enter this into maple?