Question 1160775: Hi! I've tried to complete this question multiple times and am quite frustrated because I cannot seem to get the middle vertical column of the answer correct!
There is
A
-2 3 0
-3 -1 -2
-1 3 -1
and
B
1 -1 -2
2 -2 -3
-3 2 -3
And I need to find what BA =
Any help would be so appreciated, thank you!
Found 2 solutions by greenestamps, ikleyn:
Answer by greenestamps(13200)   (Show Source):
You can put this solution on YOUR website!
The middle column of the product matrix BA is elements (1,2), (2,2), and (3,2).
Element (1,2) of BA is the sum of the products of the elements in row 1 of B and column 2 of A:
Element (2,2) of BA is the sum of the products of the elements in row 2 of B and column 2 of A
Element (3,2) of BA is the sum of the products of the elements in row 3 of B and column 2 of A
You can do the calculations for those two.
Answer by ikleyn(52783)  (Show Source):
You can put this solution on YOUR website! .
From your post, it is clear that you simply don't know the rule of matrix multiplication.
So, you need to learn it from your source.
It is really basic and core skill/knowledge for you to learn . . . Same as the multiplication table . . .
By the way, at which educational institution (university / college / school) do you study Math ?
And what is your source / textbook ?
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