If A is square matrix of order 3 and B = - CUETMOCK

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Home Questions 3B86KK9G7A

Target Exam

CUET

Subject

-- Mathematics - Section B1

Chapter

Matrices

Question:

If A is square matrix of order 3 and B =-2A such that |B|= k|A| then the value of k is

Options:

8

4

16

-8

Correct Answer:

-8

Explanation:

The correct answer is option (4) → -8 $\frac{80}{89}$

$|B|=(-2)^3|A|$

so $k=-8$

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