Problem: Report Erro Let u and v be three-dimensional vectors such that the length of u is 2, the length of v is 4, and the angle between u and v when placed tail to tail is 120. Let A be a 3 x 3 matrix such that row] (A) = u, row2 (A ) = V, rows(A) = 3u + 2v. Then what are Au and A v in that order? (Your answers should be numerical.) Your Answer: SUBMIT GIVE UP