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**Faz** suppose matrix product AB is defined

Qa)if A is a 6x5 and B is a column matrix,give the dimensions of B and AB

my ans: Dimension of B = 6x1 and Dimension of AB=6x1---plse assist to check Your answer for the dimension of AB is correct. However, the dimension of B is only 5x1...

Qb)If A is the identitiy matrix and B is a 6x6 , what size is A

My ans: A is 6x6 Correct

c)If A is 7x8 and B is the identity matrix, what is the size of B

my ans: The size of B is 7x7 Correct

Plse kindly check for me and help where possible.....