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:

   (i) A + B

Answers (1)

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

(i) A + B

The addition of matrix can be done as follows

 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} 3 &7 \\ 1 & 7 \end{bmatrix}

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