Q1    Let A = \begin{bmatrix} 2 &4 \\ 3 & 2 \end{bmatrix}B = \begin{bmatrix} 1 &3 \\ -2 & 5 \end{bmatrix}C = \begin{bmatrix} -2 &5 \\ 3 & 4 \end{bmatrix}

Find each of the following:

            (ii) A - B  

Answers (1)

A = \begin{bmatrix} 2 &4 \\ 3 & 2 \end{bmatrix} B = \begin{bmatrix} 1 &3 \\ -2 & 5 \end{bmatrix}

(ii) A - B  

A-B = \begin{bmatrix} 2 &4 \\ 3 & 2 \end{bmatrix}   - \begin{bmatrix} 1 &3 \\ -2 & 5 \end{bmatrix}

A-B = \begin{bmatrix} 2-1 &4-3 \\ 3-(-2) & 2-5 \end{bmatrix}

A-B = \begin{bmatrix} 1 &1 \\ 5 & -3 \end{bmatrix}            

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