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

#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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Provide solution for RD Sharma maths class 12 chapter Determinants exercise 5.1 question 12 subquestion (i)

Answers (1)

Answer:

$x=\frac{13}{15}$

Hint:

If matrix is singular, then |A| = 0

Given:

$\begin{bmatrix} 1+x &7 \\ 3-x &8 \end{bmatrix}$

Solution:

$\begin{aligned} &|\mathrm{A}|=0 \\ &8+8 \mathrm{x}-21+7 \mathrm{x}=0 \\ &15 \mathrm{x}-13=0 \\ &15 \mathrm{x}=13 \\ &\mathrm{x}=\frac{13}{15} \end{aligned}$

Posted by

infoexpert25

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Get Answers to all your Questions

Provide solution for RD Sharma maths class 12 chapter Determinants exercise 5.1 question 12 subquestion (i)

Answers (1)

Posted by

infoexpert25

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