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Given Determine CA−CBC A - C B
A) [58−12−6−11181112−12]\left[ \begin{array} { r r r } 5 & 8 & - 12 \\ - 6 & - 11 & 18 \\ 11 & 12 & - 12 \end{array} \right]

Question 21

Multiple Choice

Given:
A=[425121],B=[55−1441],C=[−2−131−2−3]A = \left[ \begin{array} { l l l } 4 & 2 & 5 \\1 & 2 & 1\end{array} \right] , B = \left[ \begin{array} { r r r } 5 & 5 & - 1 \\4 & 4 & 1\end{array} \right] , C = \left[ \begin{array} { r r } - 2 & - 1 \\3 & 1 \\- 2 & - 3\end{array} \right]
determine CA−CBC A - C B .


A) [58−12−6−11181112−12]\left[ \begin{array} { r r r } 5 & 8 & - 12 \\ - 6 & - 11 & 18 \\ 11 & 12 & - 12 \end{array} \right]
B) [2−9−123−20]\left[ \begin{array} { r r r } 2 & - 9 & - 12 \\ 3 & - 2 & 0 \end{array} \right]
C) [−19−2001]\left[ \begin{array} { c c } - 19 & - 20 \\ 0 & 1 \end{array} \right]
D) [23−9−2−120]\left[ \begin{array} { r r } 2 & 3 \\ - 9 & - 2 \\ - 12 & 0 \end{array} \right]
E) not possible

Correct Answer:

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