Question

If a square matrix A has two identical rows or columns, then det. A is: ____________.

Options

• none of these

• -1

• 1

• 0

Answer 1

If a square matrix A has two identical rows or columns, then det. A is 0.

Explanation:

Det. A is equal to zero. The determinant of a matrix is zero if two rows or columns of the matrix are equal.