Homework Due 9-12-2011 Inv Update

Homework Due 9-12-2011 Inv Update - Homework: HW Due...

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Homework: HW Due 9-12-2011 Let A be a 3 by 4 matrix: 1421 36 51 21 3 3 A ⎡⎤ ⎢⎥ =− ⎣⎦ Define B as the first three columns of A . The inverse of B is: 11 1 4 2 23 10 32 0.404 0.175 0.561 3 6 5 , 1 7 11 / 57, 0.018 0.123 0.193 2 1 3 15 9 6 0.263 0.158 0.105 BB B −− = ± 1 100 8 3 / 5 7 010 4 1 / 5 7 001 1 2 / 5 7 BA = (1) Form 1 B by replacing column 1 of B by column 4 of A . Obtain the inverse of 1 B from the inverse of B by using the one step matrix M approach. 1 , MB == (2) Form 2 B by replacing column 2 of B by column 4 of A . Obtain the inverse of 2 B from the inverse of B by using the one step matrix M approach. 1 22 ,

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(3) Form 3 B by replacing column 3 of B by column 4 of A . Obtain the inverse of 3 B from the inverse of B by using the one step matrix
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Homework Due 9-12-2011 Inv Update - Homework: HW Due...

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