Answer: 8 det(A).
- A 2 det(A)
- B 4 det(A)
- C 6 det(A)
- D 8 det(A)
Correct answer: D. 8 det(A)
Explanation: det(kA) = kn det(A) for an n x n matrix. For 3x3: det(2A) = 23 det(A) = 8 det(A).
Element aij of matrix A sits at the intersection of row i and column j.
Concept context
Matrix operations, determinants, inverses, and solving linear systems