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(i) if A=[{:(1,-4),(3,1):}]and b=[{:(1,...

`(i) if A=[{:(1,-4),(3,1):}]and b=[{:(1,0,5),(-2,4,3):}],`then show that :
`(AB)'=B'A'`
`(ii) if A=[{:(2,3),(0,1):}]and B=[{:(3,4),(2,1):}],`then prove that :
`(AB)'=B'A'`

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