If A is a square matrix and det(A) = 0, which statement is correct?
Correct answer: B. A is a singular matrix
- A. A has a unique inverse
- B. A is a singular matrix
- C. A must be an identity matrix
- D. A has only positive entries
Explanation
A square matrix with determinant zero is singular and therefore has no inverse. The determinant does not determine whether its entries are positive or whether it is an identity matrix.
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