Patrick B. answered • 07/27/20

Math and computer tutor/teacher

The product of

0 1 1 1 1/2 -1/2

2 0 1 and 3 0 -1

0 2 3 -2 0 1

is

1 0 0

0 1 0

0 0 1

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The product of

1 1/2 -1/2 0 1 1

3 0 -1 and 2 0 1

-2 0 1 0 2 3

1 0 0

0 1 0

0 0 1

so yes they are inverses because BOTH of their products are the identity matrix