# EM-Quiz10 - MATH 3321 1 3 1 If A = 2 2 B = 4 0 then d23 =(a 1(b 17(c 9(d 17(e None of the above Quiz 10 3 2 2 0 4 2 2 3 0 C = 4 2 3 and D = AB 3C 0

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MATH 3321 Quiz 10 4/7/10 1. If A = - 13 2 - 2 40 ,B = ± 3 - 22 04 - 2 ² ,C = 2 - 30 4 - 2 - 3 0 - , and D = AB - 3 C , then d 23 = (a) - 1 (b) 17 (c) 9 (d) - 17 (e) None of the above. 2. If A is 2 × 3, B is 3 × 4, C is 4 × 2, and D is 3 × 2, then ABC +2 D is: (a) 2 × 2 (b) 3 × 2 (c) 2 × 3 (d) Does not exist. (e) None of the above. 3. Let A = ± 1 - 3 - 24 ² . The element in the (1,2) position of A - 1 is: (a) - 3 / 2 (b) 3 (c) 3 / 2 (d) - 1 / 2 (e) None of the above. 4. Let A = 1 - 20 1 - 12 2 - 41 . The element in the (1,2) position of A - 1 is: (a) 7 (b) 2 (c) - 4 (d) A - 1 does not exist. (e) None of the above. 1

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5. Let A = 10 3 - 12 - 2 02 1 . The element in the (1,3) position of A - 1 is: (a) 3 (b) - 1 / 2 (c) 6 (d) A - 1 does not exist. (e) None of the above. 6. The values of λ such that A = 215 01 λ λ 03 is singular are: (a) λ =5 , 1 (b) λ = - 2 , 4 (c) λ =2 , 3 (d) λ , - 1 (e) None of the above. 7. The values of λ such that A = 1 - λ - 33 3 - 5 - λ 3 6 - 64 - λ is singular are: (a) λ = - 4 , 2 (b) λ , - 2 , 4 (c) λ =4 , - 2 (d) λ =6 ,
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## This note was uploaded on 02/09/2011 for the course MATH 3321 taught by Professor Morgan during the Fall '08 term at University of Houston.

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EM-Quiz10 - MATH 3321 1 3 1 If A = 2 2 B = 4 0 then d23 =(a 1(b 17(c 9(d 17(e None of the above Quiz 10 3 2 2 0 4 2 2 3 0 C = 4 2 3 and D = AB 3C 0

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