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
- $$A = \left[ \begin{array} { r r r r } 1 & 0 & 0 & - 1 \\2 & 1 & 0 & 0 \\1 & 1 & 1 & - 2 \\0 & 0 & 0 & 1\end{array} \right] , \quad B = \left[ \begin{array} { r r r r } 1 & 0 & 0 & 1 \\- 2 & 1 & 0 & - 2 \\1 & - 1 & 1 & 3 \\0 & 0 & 0 & 1\end{array} \right]$$

A) $\mathrm { B } = \mathrm { A } ^ { - 1 }$
B) $B \neq A ^ { - 1 }$