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Question 8 1 pts Find the curvature of the curve T (t) = (4t, - 3t3, 3t4) at the point t = 1. Give your answer to 2 decimal places. Get Help: Video Ex Written Example K = [r'(1) x r"(1)| | > |7' (1) 13 (15.52417469626) 1 193.86593305684 ~0.05 (15.52417469626) (15.52417469626)3 0 0.02 O 0.05 O 0.09D Question 9 1 pts Find the curvature of the curve F(t) = (1 + 4 cos t, 2, 4 sin t) at the point t1 Z''. Question 10 1 pts Given the vector function T (t) = (t, - 3t2, - 4t4 + 4) Find the velocity and acceleration vectors at t = - 1. 3( - 1) = Get Help: Video Ex O O O O