Use row reduction to find the inverse of the given matrix, if it exists, and check your answer by multiplication.
$\left[ \begin{array} { c c c c }
1 & 1 & - 1 & 1 \
- 1 & 1 & 1 & 0 \
- 1 & 1 & 0 & 1 \
4 & - 1 & - 1 & - 1
\end{array} \right]$

Question

Use row reduction to find the inverse of the given matrix, if it exists, and check your answer by multiplication.
​ $\left[ \begin{array} { c c c c } 
1 & 1 & - 1 & 1 \
- 1 & 1 & 1 & 0 \
- 1 & 1 & 0 & 1 \
4 & - 1 & - 1 & - 1
\end{array} \right]$

Quizplus · Accepted Answer

The Answer of Use row reduction to find the inverse of the given matrix, if it exists, and check your answer by multiplication.
​ $\left[ \begin{array} { c c c c } 
1 & 1 & - 1 & 1 \
- 1 & 1 & 1 & 0 \
- 1 & 1 & 0 & 1 \
4 & - 1 & - 1 & - 1
\end{array} \right]$

Use Row Reduction to Find the Inverse of the Given [11−11−1110−11014−1−1−1]\left[ \begin{array} { c c c c } 1 & 1 & - 1 & 1 \\- 1 & 1 & 1 & 0 \\- 1 & 1 & 0 & 1 \\4 & - 1 & - 1 & - 1\end{array} \right]​1−1−14​111−1​−110−1​101−1​​

Use Row Reduction to Find the Inverse of the Given $\left[ \begin{array} { c c c c } 1 & 1 & - 1 & 1 \\- 1 & 1 & 1 & 0 \\- 1 & 1 & 0 & 1 \\4 & - 1 & - 1 & - 1\end{array} \right]$