Multiplicative Inverses of Matrices and Matrix Equations
1 Find the Multiplicative

Multiple Choice

Multiplicative Inverses of Matrices and Matrix Equations
1 Find the Multiplicative Inverse of a Square Matrix
- $$\mathrm { A } = \left[ \begin{array} { r r r } 1 & 0 & 0 \\- 1 & 1 & 0 \\1 & 1 & 1\end{array} \right]$$

A)
$$\left[ \begin{array} { r r r } 1 & 0 & 0 \\1 & 1 & 0 \\- 2 & - 1 & 1\end{array} \right]$$
B)
$\left[ \begin{array} { l l l } 1 & 1 & 1 \\ 0 & 1 & 1 \\ 0 & 0 & 1 \end{array} \right]$
C)
$\left[ \begin{array} { r r r } 1 & - 1 & 1 \\ 0 & 1 & - 1 \\ 0 & 0 & 1 \end{array} \right]$
D)
$\left[ \begin{array} { r r r } - 1 & 0 & 0 \\ - 1 & - 1 & 0 \\ - 1 & - 1 & - 1 \end{array} \right]$