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Matrices & Determinants

Inverse of a matrix

Grade 12

Question:

<p>If det(\(A\)) = 3, then det(\(A\)⁻^1) is:</p>

3

1/3

9

0

Step-by-Step Solution

Key Concept: det(A⁻^1) = 1 / det(A).

1. det($A$⁻^1) = 1/det($A$) 2. = 1/3

Correct Answer: 2