Question

1. Determine whether the matrices are inverses.

Answer 1

Answer:

No ... A* B=

-1 20    

0 -1      

which is not

is not   1   0

            0 1

Step-by-step explanation:

10 1  0 1

-1 0  -1 10

   

   

   

-1 20    

0 -1    

Answer 2

Answer:

Hello,

the matrices are not inverses

Step-by-step explanation:

$\begin{bmatrix}10&1\\-1&10\end{bmatrix}*\begin{bmatrix}0&1\\-1&10\end{bmatrix}\\\\\\=\begin{bmatrix}10*0+1*1&10*1+1*10\\-1*0+0*(-1)&-1*1+0*10\end{bmatrix}\\\\\\=\begin{bmatrix}1&20\\0&-1\end{bmatrix}\neq \begin{bmatrix}1&0\\0&1\end{bmatrix}$