Problem #5: (a) Let u = (-1, -6, -6, -10) and v = (2, -3, 4, -9). Find llu - projvull. Note: You can partially check your work by first calculating proj,u, and then verifying that the vectors projou and u - projyu are orthogonal. (b) Consider the following vectors u, v, w, and z (which you can copy and paste directly into Matlab). u = [-7.3 -5.3 -0.9], v = [-4.7 -7.3 -9], w = [3 1.1 4.6] , Z = [-1.4 -9.6 -8.7] Find the determinant of the following matrix. U . wuz V . W V . Z To check your work, you can also calculate the following quantity: (uxv) . (w x z). This quantity, and the determinant of the above matrix, must always be equal. Problem # 5(a): Problem #5(b): Just Save Submit Problem #5 for Grading