Question 1 Find the domain of the vector function r (t) = Domain: {t Evaluate the limit Hm a+m+ t>0 3+mu+m t25 Enter your answer in a; + b} + cic' form. However, use the ordinary letters 2', j, and k for the component basis vectors; you don't need to reproduce the vector arrow notation. % Question 3 - 7 -t 5 t 2 Let r(t) = Question 4 > Given the vector-valued functions u(t) = e- 4ti + e-4t; - 2tk v ( t ) = - 5ti + 2+23 - 5k find dt (u(t) . v(t)) when t = 0.Question 5 and r(0) = . Find r(t) T ( t) =