Question: Question 1: Compute AB, BA, 3A + BBT, A3 - A? + A - 212 for 4=[1 8) and B - 8 2 Question 2:

Question 1: Compute AB, BA, 3A + BBT, A3 - A? + A - 212 for 4=[1 8) and B - 8 2 Question 2: Either find the inverse of the following matrix or determine that it is singular (not invertible): (a) 1 (b) NULL (c) -1:0 Question 3: | Suppose A = 0.# 1 0-10 and b First find A ) then 1 solve Ar = b by calculating I =A b. Question 4: Write the invertible matrix A a 3 9 as a product of elemen- tary matrices (the actual matrices and not just their symbolic form)

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