Matrices & Determinants
Properties of determinants
Grade 12

Question:

<p>If \(\det(A)\)=k, then det((A\)^T)^2A^{-1}) equals:</p>
<p>(A) k</p>
<p>(B) k^2</p>
<p>(C) 1</p>
<p>(D) k^3</p>

Step-by-Step Solution

Key Concept: det((A$^T)^2A^{-1}) = (det $A)^2 \times (det $A)^{-1} = k.
1. det((A$^T)^2)=k^2 2. Multiply with 1/k 3. Result = k
Correct Answer: 1

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