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Unformatted text preview: I AB ) 2.3.b . Show that ( A I )( I B ) = ( I B )( A I ) = ( A B ) 2.3.c . Show that ( A I )( B I ) = ( AB I ) 2.3.d . Show that ( A B )( C D ) = ( AC ) ( BD ) . 2.3.e . Show that if A C n n and B C n n have inverses A1 and B1 , respectively, then ( A B ) has an inverse. 1 Problem 2.4 Let A C m m , B C n n , x C mn , and y C mn . 2.4.a . Describe an algorithm to evaluate the matrix vector product y = ( A B ) x i.e., given A, B, x determine y . 2.4.b . What is the complexity of the algorithm? 2.4.c . How does the complexity of the algorithm compare to the standard matrixvector product computation? 2...
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This note was uploaded on 11/10/2011 for the course MAD 5932 taught by Professor Gallivan during the Fall '06 term at FSU.
 Fall '06
 gallivan

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