Question

+ 2 1 -1 0 What is the size of the matrix resulting from X-3 -7 1 -5 2 o 1 x 1 0 1 x 3 o 3 x 1 3 x 3

Answer 1

Answer:

1 * 3

Explanation

if we multiply two matrices of dimentions (a1 x a2 ) and (b1 x b2) then

$(a_1,a_2)\times(b_1,b_2)$

then the dimensions of the resulting matrix will be

$(a_1\times b_2)_{}$

Now in our case we have

$(a_1\times a_2)=(1\times3)$

and

$((b_1\times b_2)=(3\times3)$

therefore, the dimensions of the resulting matrix will be

$(a_1\times b_2)_{}=(1\times3)_{}$

which is our answer!