Matrices & Determinants
Properties of determinants
Grade 12
Question:
<p>If determinant of matrix \( A \) is 5, then determinant of \(2A\) is:</p>
Step-by-Step Solution
Key Concept: Scaling matrix by k multiplies determinant by kⁿ (n=order).
1. det(\(2A\)) = \(2^3\) \times det(A)
2. = 8 \times 5 = 40
Correct Answer: 3