For problems 1 through 4 let A = [1 1. Find A + B 5. For problems 5 and 6, solve for X, given 7. 8. 2X=2A - B 9. 10. -1] and B = [2 -1] 12 -1] [-1 8] Find AB 2. Find A - B 1 For problems 7 through 10, multiply on your calculator (if we have covered this in class): (Forgive the lack of brackets - they're a pain to type.) 11. A = 5 6 -3 -25 1 10 -5 5 Multiply CD C = 9 10 -38 18 100-50 250 75 AB 3. Find 3A [-2-1] [03] A = [1 0] and B = [20] [3-4] [-4-1] Find BA using the matrices in problem 7 to show that AB #BA. Multiply DC using the matrices in problem 9. 12. BC 6. B = 1 -1 2 814 4 -2 9 13. D = 52 40 -85 -35 27 60 45 82 For problems 11-15, assume matrices A and B have order 2 x 3, matrix C has order 3 x 2, and matrix D has order 2 x 2. Determine if the matrices are of the proper order to perform the indicated operations. If so, give the order of the answer. If not, write "not compatible" 2A + 4B = -2X 4. Find 3A - 2B. D 14. D(A-3B) 15. (BC-D)A