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1 of 8 0-day streak

Decide whether a matrix product is defined and give its order

Question 1 of 8

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The matrices \(C\) and \(A\) are shown below

\[C = \begin{bmatrix} 1 & -1 & 1 \\ -6 & -1 & -5 \end{bmatrix}\]
\[A = \begin{bmatrix} 4 & 8 \\ 8 & 6 \\ -9 & 3 \end{bmatrix}\]
(a)1 mark

Decide whether the product \(CA\) is defined

(b)2 marks

Write down the order of the product \(CA\)