find the matrix
|7 -7 -2| |9 4 8|
|7 2 -7| |9 -3 1|
|7 -7 3 | |-5 3 7|

Question

find the matrix 
|7  -7  -2|      |9   4   8|
|7   2   -7|      |9  -3  1|
|7   -7  3 |     |-5  3   7|

yuki · Answer

you already have the matrices

yuki · Answer

are you adding them or something ?

anonymous · Answer

the question find the matrix product , if possible ?  can u explain for me a lit bit

yuki · Answer

that's a really tough one, so it might take a while for me to use the equation button, so hold on a sec, ok ?

anonymous · Answer

sure

anonymous · Answer

yuki · Answer

when you multiply a a*b matrix to a b*c matrix,
you will always get a a*c matrix

yuki · Answer

in your case you are doing 3*3 and 3*3 so you will have a 
3*3 matrix as an answer

yuki · Answer

now to determine the entrees, this is the step that you have to do

yuki · Answer

the

yuki · Answer

$$a_11$$

yuki · Answer

$$a_{11}$$

mathmagician · Answer

When multiply, you get
10 43 35
116 1 9
-15 58 70, if that was the question

yuki · Answer

term can be figured out by multiplying the 1st row from the first matrix and the 1st column of the second matrix

yuki · Answer

so you 7*9 + -7*9 + -2*-5 =10

amistre64 · Answer

[abc] * [d]
           [e]  = a.d + b.e + c.f
            [f]

yuki · Answer

$$a_{12}$$

yuki · Answer

will be calculated by

7*4 +  -7*-3 + -2*3

yuki · Answer

and so forth