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Name: Need solution for RD Sharma maths Class 12 Chapter 5 Determinants Exercise VSQ Question 33 maths textbook solution.
Uploaded: Wed, 2021-08-04 13:36
Description: Need solution for RD Sharma maths Class 12 Chapter 5 Determinants Exercise VSQ Question 33 maths textbook solution.

#RD Sharma Vol. 1 Class 12
#CBSE 12 Class
#Determinants
#School
#Maths
#R.D. Sharma

#1.3
#5.2
#5.3
#5.4
#5.5
#5.1
#9.12
#Fill in the blanks
#Very Short Answer type
#Multiple Choice Questions (MCQs)

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Need solution for RD Sharma maths Class 12 Chapter 5 Determinants Exercise VSQ Question 33 maths textbook solution.

Answers (1)

Answer: -81

Hint: Here we use basic concept of determinant of matrix

Given : $|A|=-1$

$\begin{aligned} &|B|=3 \\ &|3 A B|=? \end{aligned}$ A and B $3 \times 3$ order of matrices So, $n=3$

Solution :

Here,

$\begin{aligned} &|3 A B|=|3 A| \times|B| \\ &=3^{n}|A| \times|B| \quad\left[|k A|=k^{n}|A|\right] \\ &=3^{3} \times-1 \times 3 \\ &=27 \times 3 \times-1 \\ &|3 A B|=-81 \end{aligned}$

Posted by

infoexpert23

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Need solution for RD Sharma maths Class 12 Chapter 5 Determinants Exercise VSQ Question 33 maths textbook solution.

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