Matrices & Determinants
Special determinants
Grade 12
Question:
<p>If determinant is identity matrix, value is:</p>
<p>(A) 1</p>
<p>(B) 0</p>
<p>(C) -1</p>
<p>(D) n</p>
Step-by-Step Solution
Key Concept: Identity matrix determinant = 1.
1. Identity matrix
2. Product of diagonal = 1
3. Answer = 1
Correct Answer: 1