Question: Let Construct a 2 3 matrix C (by trial and error) using only l, - 1, and 0 as entries, such that CA =

LetA || = 1 15


Construct a 2 × 3 matrix C (by trial and error) using only l, - 1, and 0 as entries, such that CA = I2. Compute AC and note that AC ≠ I3.

A || = 1 15

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