Let r = (e141-7, @15-71, (t + 1) -10) Compute the derivative. (Use symbolic notation and fractions where needed. Give your answer in the form (x(t), y(t), z(t)).) dr dtEvaluate the limit. 1 - - 4 lim ( +2, -91, ) - h-0 h (Use symbolic notation and fractions where needed.) f (t) = g(t) = h(t) =