Matrices & Determinants
Adjoint
Grade 12
Question:
<p>If det(\(A\)) = 2, then det(Adj \(A\)) for 2 \times 2 matrix is:</p>
Step-by-Step Solution
Key Concept: det(adj A) = (det A)ⁿ⁻^1 \to for 2 \times 2, power = 1.
1. det(adj $A$) = (det $A$)^1
2. = 2
Correct Answer: 1