When you multiply a matrix by the identity matrix, you obtain the

product is the right answer of your question

Step-by-step explanation:

Any number multiplied by one results in the same original number. The same goes for a matrix multiplied by an identity matrix, the result is always the same original non-identity (non-unit) matrix, and thus, as explained before, the identity matrix gets the nickname of "unit matrix".

step-by-step explanation:

the expression (1.26)2t reveals the approximate rate of increases in the number of plants semiannually.

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