Find All the Cofactors of the Matrix $$\left[ \begin{array} { c c } 6 & 7 \\4 & - 8\end{array} \right]$$

question 18

Multiple Choice

Find all the cofactors of the matrix.​ $$\left[ \begin{array} { c c } 6 & 7 \\4 & - 8\end{array} \right]$$ ​

• A) \(C _ { 11 } = - 7 , C _ { 12 } = - 4 , C _ { 21 } = - 6 , C _ { 22 } = 8\)
• B) \(C _ { 11 } = - 6 , C _ { 12 } = - 4 , C _ { 21 } = - 7 , C _ { 22 } = 8\)
• C) \(C _ { 11 } = - 8 , C _ { 12 } = - 4 , C _ { 21 } = - 7 , C _ { 22 } = 6\)
• D) \(C _ { 11 } = 8 , C _ { 12 } = 4 , C _ { 21 } = 7 , C _ { 22 } = - 6\)
• E) \(C _ { 11 } = - 6 , C _ { 12 } = - 7 , C _ { 21 } = - 4 , C _ { 22 } = 8\)

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