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Posted: **Thu Jul 07, 2022 2:19 pm**

: Another Very Significant Difference Is The Existence Of Zero Divisors There Are Non Zero Matrices A And B With Ab 0 1 (21.55 KiB) Viewed 74 times

Another very significant difference, is the existence of zero divisors: there are non-zero matrices A and B with AB = 0. [9] -689. Exercise 23. Find an example of A and B both 2 × 2 matrices, both with no entry equal to zero, so that AB = 0. For example, take A = and B =