Either the dimensions of two matrices or the matrices themselves are given. Find the dimensions of the product AB and the product BA. If either is not defined, say so.A = 
; B = 
.
A. AB is 3 × 3; BA is 3 × 3.
B. AB is 1 × 1; BA is 3 × 3.
C. AB is 1 × 1; BA is 1 × 1.
D. AB is not defined; BA is not defined
Answer: D
Mathematics
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