Matrices & Determinants
Properties of determinants
Grade 12

Question:

<p>If \(\det(A)\)=k, then det(A\)^nA^mA⁻^nA⁻^m) equals:</p>
<p>(A) 1</p>
<p>(B) k</p>
<p>(C) k^2</p>
<p>(D) k^n</p>

Step-by-Step Solution

Key Concept: All powers cancel: n + m - n - m = 0 \Rightarrow $I$.
1. Expression = $I$ 2. det(I)=1
Correct Answer: 1

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