find the length of the curve of r(t)=<2t, t^2, (t^3)/3>
so i take the derivative of each, and then square them and get
<4, 4t^2, t^4>
and the formula is srqt (4+4t^2+t^4)
and i need to find it from t=1 to t-2.
i just don't know how to solve that integral. it doesn't really seem possible. can anyone help with that? thanks