Question

Find the Domain:

r(t)= F(t) cross G(t), where F(t)=t^3i-tj+tk and G(t)=cubert(t)i+1/t+1j+(t+2)k

Answer 1

(-1-3 t-t^2)i+(t^(4/3)-2 t^3-t^4)j+(t^(4/3)+t^2+t^3)k