Question:

I+1 1 ] 1 0 522 3 3 3' M Le\") 0 0 3232 3+1 0 0 22 1 Find all values of a: such that rank D = 1, 2, 3, 4' (b) Let A and B be m x n and n x k matrices respectively. (i) Show that, if m :> n and A is full rank, then rank AB = rank B) (ii) 15 it true that? if k :> n and B is full rank? them rank AB = rank A? J1:LE+tif'},r your

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