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Find the Inverse of the Matrix [1131]\left[ \begin{array} { r r } 1 & 1 \\3 & - 1\end{array} \right]

Question 32

Multiple Choice

Find the inverse of the matrix.
- [1131]\left[ \begin{array} { r r } 1 & 1 \\3 & - 1\end{array} \right]


A) [34141414]\left[ \begin{array} { l l } \frac { 3 } { 4 } & - \frac { 1 } { 4 } \\ \frac { 1 } { 4 } & \frac { 1 } { 4 } \end{array} \right]

В) [14143414]\left[ \begin{array} { r } - \frac { 1 } { 4 } \frac { 1 } { 4 } \\ \frac { 3 } { 4 } \frac { 1 } { 4 } \end{array} \right]

C) [14143414]\left[ \begin{array} { c c } \frac { 1 } { 4 } & \frac { 1 } { 4 } \\ \frac { 3 } { 4 } & - \frac { 1 } { 4 } \end{array} \right]

D) [14143414]\left[ \begin{array} { r } \frac { 1 } { 4 } - \frac { 1 } { 4 } \\ - \frac { 3 } { 4 } - \frac { 1 } { 4 } \end{array} \right]

Correct Answer:

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