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Name: Please solve RD Sharma maths Class 12 Chapter 5 Determinants Exercise VSQ Question 41 maths textbook solution.
Uploaded: Wed, 2021-08-04 14:55
Description: Please solve RD Sharma maths Class 12 Chapter 5 Determinants Exercise VSQ Question 41 maths textbook solution.

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

#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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Please solve RD Sharma maths Class 12 Chapter 5 Determinants Exercise VSQ Question 41 maths textbook solution.

Answers (1)

Answer: $x= 2$

Hint: Here we use basic concept of singular matrix

Given: $\left|\begin{array}{ll} 6-x & 4 \\ 3-x & 1 \end{array}\right|$

Solution :

Let ,

$|A|=\left|\begin{array}{cc} 6-x & 4 \\ 3-x & 1 \end{array}\right|$

Let's assume A is singular so,

$\begin{aligned} &|A|=0 \\ &\left|\begin{array}{ll} 6-x & 4 \\ 3-x & 1 \end{array}\right|=0 \\ &6-x(1)-[(3-x)(4)]=0 \\ &6-x-12+4 x=0 \\ &3 x=6 \\ &x=2 \end{aligned}$

$\rightarrow \text { At } x=2$ A becomes singular

Posted by

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Please solve RD Sharma maths Class 12 Chapter 5 Determinants Exercise VSQ Question 41 maths textbook solution.

Answers (1)

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