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Unformatted text preview: 3) (a) (4 A3 D ) B = 182 114 (b) A ( CD ) + 5 A = 715 48391 253 201145 (c) A and C are not square matrices. (d) ( 1 2 )(7)(7 4 )(2) = 7 27 2 = 0. 1 is undened, so E1 does not exist. (e) 1 27 42 7 x y = 2 18 1 2 x7 4 y =22 x + 7 y = 18 4) (a) ( x,y ) = ( 3 11 ,21 11 ) (b) ( x,y ) = ( 43 3 , 29) 1...
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This note was uploaded on 12/07/2010 for the course MATH Math 121 taught by Professor Beaulieu during the Fall '10 term at UMass (Amherst).
 Fall '10
 Beaulieu
 Math, Probability

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