Question

Find the 3x3 matix X that satisfies the matrix equation XA = B, where

A=| 1 1 1 | and B = | 1 3 0 |
|-1 0 -2| |-2 1 -2 |
|1 0 -1| |1 4 -1|

Answer 1

[3 2 -1]
[1 2 -1]
[4 2 1]

Answer 2

how would you solve it?

Answer 3

do u know how to do matrix multiplication?

Answer 4

yes, I just don't know how would u find X.

Answer 5

so u see:
1(x)+1(y)+1(z)=1
1(x)+0(y)+0(z)=3
1(x)-2(y)-1(z)=0

solving x,y and z gives 3, 2 and -1 respectively
which is the first row of the matrix X

Answer 6

I see, I figured it out. I did the transpose of A augmented with the transpose of B and got an answer and transpose the answer to get the solution.