- Is equal to the product of eigen values
- is always less than |A|
- is always greater than |A|
- is equal to the trace of A

Answer: Option 4

Explanation:

By definition, Trace of a square matrix = Sum of its diagonal elements = Sum of all its eigen values

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Then I choose to drown. In hope. Rather than float into nothing.

-Melina Marchetta
Finnikin of the Rock