Find the Inverse of the Matrix $$\left[ \begin{array} { c c } 2 & 1 \\- 1 & 8\end{array} \right]$$

question 10

Multiple Choice

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

• A) \(\left[ \begin{array} { c c } \frac { 8 } { 17 } & - \frac { 1 } { 17 } \\ - \frac { 1 } { 17 } & \frac { 2 } { 17 } \end{array} \right]\)
• B) \(\left[ \begin{array} { c c } \frac { 8 } { 17 } & \frac { 1 } { 17 } \\ \frac { 1 } { 17 } & \frac { 2 } { 17 } \end{array} \right]\)
• C)
• \[\left[ \begin{array} { c c }
• - \frac { 8 } { 17 } & - \frac { 1 } { 17 } \\
• \frac { 1 } { 17 } & \frac { 2 } { 17 }
• \end{array} \right]\]
• D) \(\left[ \begin{array} { c c } \frac { 8 } { 17 } & - \frac { 1 } { 17 } \\ \frac { 1 } { 17 } & \frac { 2 } { 17 } \end{array} \right]\)
• E) \(\left[ \begin{array} { c c } \frac { 8 } { 17 } & - \frac { 1 } { 17 } \\ \frac { 1 } { 17 } & - \frac { 2 } { 17 } \end{array} \right]\)

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