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Find the Minor M13M _ { 13 } And Its Cofactor C13C _ { 13 }

Question 111

Multiple Choice

Find the minor M13M _ { 13 } and its cofactor C13C _ { 13 } of the matrix [−32−83−26−13−6]\left[ \begin{array} { c c c } - 3 & 2 & - 8 \\ 3 & - 2 & 6 \\ - 1 & 3 & - 6 \end{array} \right] .


A) M13=∣−3−8−1−6∣=10M _ { 13 } = \left| \begin{array} { r r } - 3 & - 8 \\ - 1 & - 6 \end{array} \right| = 10
C13=−10C _ { 13 } = - 10
B) M13=∣2−8−26∣=−4M _ { 13 } = \left| \begin{array} { c c } 2 & - 8 \\ - 2 & 6 \end{array} \right| = - 4
C13=−4C _ { 13 } = - 4
C) M13=∣3−2−13∣=7M _ { 13 } = \left| \begin{array} { c c } 3 & - 2 \\ - 1 & 3 \end{array} \right| = 7
C13=−7C _ { 13 } = - 7
D) M13=∣2−8−26∣=−4M _ { 13 } = \left| \begin{array} { c c } 2 & - 8 \\ - 2 & 6 \end{array} \right| = - 4 C13=4C _ { 13 } = 4
E)
M13=∣3−2−13∣=7C13=7\begin{array} { l } M _ { 13 } = \left| \begin{array} { c c } 3 & - 2 \\- 1 & 3\end{array} \right| = 7 \\C _ { 13 } = 7\end{array}

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