Please help with practice problem.

Find the velocity and acceleration vectors and the equation of the tangent line for the curve r(t) = ri + es' j + 7e'rk at t = 0. (Use symbolic notation and fractions where needed. Give your answers in the form (*,*,*).) v(0) = 3(0) = (Use symbolic notation and fractions where needed. Give your answers in the form (*,*,*). Use 1 for the parameter that takes all real values.) 1(1) =