Question

Determine if the given matrices are inverses. Answer yes or no.

Answer 1

No. This is due to the fact that \(\large\bf{a_{21}}\)needs to be 12.5 as well. Others are incorrect as well such as \(\large\bf{a_{23}}\), \(\large\bf{a_{32}}\), \(\large\bf{a_{33}}\) and some others.

Answer 2

A1 needs to be 12.5? wut?

Answer 3

Determinate equals: `1(0 x -1-0.2 x 0.8)-1.2(0.4 x -1-0.2 x 1)+-1.6(0.4 x 0.8-0 x 1)`

Which equals `0.4799999 or .48`

We then apply this into the matrix with its format and get.

The two are not alike.

Answer 4

If A and B are inverses, then A* B = B*A = I
just test the first multiplication, you can see it.

Answer 5

Or do that ^.^

Guess I do it the hard way.

Answer 6

i see