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Consider the following matrix A . Find A 1. Make sure to show your work. A= 1 2 3 2 5 4 3 4 14

Consider the following matrix A . Find A 1. Make sure to show your work.

A= 1 2 3

2 5 4

3 4 14

Which of the following matrices is an elementary matrix? Circle it and explain how you know it is an

elementary matrix.

1 0 0

0 2 0

0 0 3

1 2 0 0

0 1 0 0

0 0 1 0

1 0 0 0

0 1 0 0

0 0 0 1

0 0 1 0

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