Questions 9 - 12 is quite difficult for us. Can you please help us. Thank you for your continued support and guidance.

QUESTION 9 If r(0) = and r'(t) =, find r(t). a WH QUESTION 10 Let r(t) =. Find an equation (vector or parametric) for the tangent line to this curve at t = 0. QUESTION 11 Find parametric equations for the tangent line to the following curve at the point (2, - 7, 2). r(t) = QUESTION 12 If r' (t) = and r(0) =, find r(t)