4. (16pts) Let 7(1) = i+leitj+e2'k, to = 0. Find parametric equations for the line that is tangent to the given path at the given parameter value to. Solution) Reference: Study Guide Questions 12 and 13. The tangent line to the curve is the line that passes through 7(0) and parallel to 17(0). (1) 7(0) = (ii) In order to ne 17(0), we rst nd 17(1) = ?'(t) =