A=[[-1,1],[2,-2],[0,-3]](3xx2),B=[[2,1],...

`A=[[-1,1],[2,-2],[0,-3]]_(3xx2),B=[[2,1],[-1,3]]_(2xx2)` Find AB and BA whichever exist?

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The correct Answer is:

`[{:(1,2),(-3,-10),(1,0):}]`

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