CBSE Class 12 Math 2019 All India Set 1 Solved Paper

Question : 1

Total: 29

If A is a square matrix of order 3 with |A|=4, then write the value of |−2A|.

Solution:

Given,
Order of the square matrix, n=3
|A|=4
|−2A|=(−2)n|A|
|−2A|=(−2)3×4
|−2A|=−32
Therefore, the value of |−2A| is -32 .

Go to Question:

Next Question