Q

# Let A = [2 4 3 2], B = [1 3 - 2 5], C = [ - 2 5 3 4] Find each of the following: (iv) AB

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:

(iv) AB

Views

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

(iv) AB

$AB = \begin{bmatrix} 2 &4 \\ 3 & 2 \end{bmatrix}$   $\times \begin{bmatrix} 1 &3 \\ -2 & 5 \end{bmatrix}$

$AB = \begin{bmatrix} 2\times 1+4\times -2 & \, \, \, 2\times 3+4\times 5 \\ 3\times 1+2\times -2 & \, \, \, 3\times 3+2 \times 5 \end{bmatrix}$

$AB = \begin{bmatrix} -6 &26 \\ -1 & 19 \end{bmatrix}$

Exams
Articles
Questions