Find the Inverse of the Invertible Matrix $$\left[ \begin{array} { l l l } 1 & 3 & 2 \\1 & 3 & 3 \\2 & 7 & 8\end{array} \right]$$

question 46

Multiple Choice

Find the inverse of the invertible matrix.
- $$\left[ \begin{array} { l l l } 1 & 3 & 2 \\1 & 3 & 3 \\2 & 7 & 8\end{array} \right]$$

• A) \(\left[ \begin{array} { l l l } 1 & - \frac { 1 } { 3 } & \frac { 1 } { 2 } \\ 1 & - \frac { 1 } { 3 } & \frac { 1 } { 3 } \\ \frac { 1 } { 7 } & \frac { 1 } { 2 } & \frac { 1 } { 8 } \end{array} \right]\)
• B) \(\left[ \begin{array} { c c c } 1 & \frac { 1 } { 3 } & \frac { 1 } { 2 } \\ 1 & \frac { 1 } { 3 } & \frac { 1 } { 3 } \\ \frac { 1 } { 2 } & \frac { 1 } { 7 } & \frac { 1 } { 8 } \end{array} \right]\)
• C) \(\left[ \begin{array} { r r r } - 3 & 10 & - 3 \\ 2 & - 4 & 1 \\ - 1 & 1 & 0 \end{array} \right]\)
• D) \(\left[ \begin{array} { l l l } - 1 & - 3 & - 2 \\ - 1 & - 3 & - 3 \\ - 2 & - 7 & - 8 \end{array} \right]\)

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