Matrices & Determinants
Determinant simplification
Grade None
Question:
<p>If determinant has a row with two identical elements, best approach is:</p>
<p>(A) subtract rows</p>
<p>(B) expand directly</p>
<p>(C) transpose</p>
<p>(D) multiply rows</p>
Step-by-Step Solution
Key Concept: Create zeros using row operations before expansion.
1. Identify repeated elements
2. Apply row subtraction
3. Simplify determinant
Correct Answer: 1