Matrices & Determinants
Properties of determinants
Grade 12

Question:

<p>If \(\det(A)\)=k, then det(A\)⁻^nA^m) where m>n equals:</p>
<p>(A) k^(m-n)</p>
<p>(B) k^(n-m)</p>
<p>(C) 1</p>
<p>(D) k</p>

Step-by-Step Solution

Key Concept: Combine powers: $A$^(m-n), then apply determinant power rule.
1. $A$^{-1}$A$^m = $A$^(m-n) 2. det = k^(m-n)
Correct Answer: 1

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