Ch 5 homework 1540 winter 09

Ch 5 homework 1540 winter 09 - Therefore |A| = 7 (-30) + 5...

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AK/ Econ 1540 Home work assignments from chapter 5 in the text Exercise 5.2 No 1 (a,c,e) , 3, 4, 5, 7 Exercise 5.3 No 4, 7 Exercise 5.4 No 2, 4 (a,c), 6 Exercise 5.5 No 1 (a,c), 3 (a,c) Exercise 5.6 No 1. Answers to questions not in the back of the text: Ex. 5.2 No 7. Expand on the second column
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Unformatted text preview: Therefore |A| = 7 (-30) + 5 (99) + 0 = 705 Ex .5.4 No. 2 A inverse = adj A/ |A| = 1/5 [ 1 -2] [0 5] B inverse = adj B/ |B| = -1/2 [2 0] [-9 -1] C inverse = adj C/ |C| = 1/24 [ -1 -7] [ 3 3 ] No. 6 a. X = 1, Y= 8 b. X1 = 2, X2 = 5, X3 = 1....
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