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Question
If A is a square matrix of order 3, then |2A| is equal to ______.
Options
2|A|
4|A|
8|A|
6|A|
Solution
If A is a square matrix of order 3, then |2A| is equal to 8|A|.
Explanation:
Order of square matrix A.
n = 3
∵ |kA| = kn|A|,
k = constant
= 8|A|
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