Answer: k times the original value.
- A k times the original value
- B k squared times the value
- C left entirely unchanged
- D reduced to exactly zero
Correct answer: A. k times the original value
Explanation: Multiplying a single row by k multiplies the whole determinant by k.
Concept context
Evaluation of determinants, cofactors, adjoint, inverse of matrix, Cramer's rule and area applications. Always in board and JEE.