Find All Cofactors of the Matrix $$\left[ \begin{array} { c c c } - 9 & 6 & - 24 \\- 9 & - 6 & 18 \\3 & - 9 & - 18\end{array} \right]$$

question 30

Multiple Choice

Find all cofactors of the matrix $$\left[ \begin{array} { c c c } - 9 & 6 & - 24 \\- 9 & - 6 & 18 \\3 & - 9 & - 18\end{array} \right]$$ . ​

• A) \[\begin{array} { l l l }
• C _ { 11 } = 270 & C _ { 12 } = - 108 & C _ { 13 } = 99 \\
• C _ { 21 } = 324 & C _ { 22 } = 234 & C _ { 23 } = - 63 \\
• C _ { 31 } = - 36 & C _ { 32 } = 378 & C _ { 33 } = 108
• \end{array}\]
• B) \[\begin{array} { l l l }
• C _ { 11 } = 270 & C _ { 12 } = 99 & C _ { 13 } = - 108 \\
• C _ { 21 } = 324 & C _ { 22 } = - 63 & C _ { 23 } = 234 \\
• C _ { 31 } = - 36 & C _ { 32 } = 108 & C _ { 33 } = 378
• \end{array}\]
• C) \[\begin{array} { l l l l }
• C _ { 11 } = - 108 & C _ { 12 } = 270 & C _ { 13 } = 99 \\
• C _ { 21 } = 234 & C _ { 22 } = 324 & C _ { 23 } = - 63 \\
• C _ { 31 } = 378 & C _ { 32 } = - 36 & C _ { 33 } = 108
• \end{array}\]
• D) \[\begin{array} { l l l }
• C _ { 11 } = - 36 & C _ { 12 } = 378 & C _ { 13 } = 108 \\
• C _ { 21 } = 324 & C _ { 22 } = 234 & C _ { 23 } = - 63 \\
• C _ { 31 } = 270 & C _ { 32 } = - 108 & C _ { 33 } = 99
• \end{array}\]
• E) \[\begin{array} { l l l }
• C _ { 11 } = 324 & C _ { 12 } = 234 & C _ { 13 } = - 63 \\
• C _ { 21 } = 270 & C _ { 22 } = - 108 & C _ { 23 } = 99 \\
• C _ { 31 } = - 36 & C _ { 32 } = 378 & C _ { 33 } = 108
• \end{array}\]

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