Matrices & Determinants
Properties of determinants
Grade 12

Question:

<p>If \det(A)=3, then \(\det(A\)\)⁻^2) equals:</p>
<p>(A) 1/9</p>
<p>(B) 1/3</p>
<p>(C) 9</p>
<p>(D) 3</p>

Step-by-Step Solution

Key Concept: det(A$⁻^2) = (det $A)⁻^2.
1. $\$\det(A)$⁻^2) = (det $A)⁻^2 2. = $3^{-2}$ = 1/9
Correct Answer: 1

Master Matrices & Determinants with Mathbee

Practice this topic under real exam conditions with strict timers, or ask our AI Mentor to explain the concepts step-by-step.

Start Practicing for Free