Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • School
  • Explain solution RD Sharma class 12 Chapter 6 Adjoint and Inverse of a Matrix exercise Fill in the blanks question 15

Explain solution RD Sharma class 12 Chapter 6 Adjoint and Inverse of a Matrix exercise Fill in the blanks question 15

Answers (1)

best_answer

Answer  \rightarrow k^{2} I

Hint   \rightarrow \operatorname{adj}(k A)=k^{n-1}(\operatorname{adj} A)

Given  \rightarrow k is a scalar and I  is a unit matrix of order  3

Explanation  \rightarrow \operatorname{adj}(k I)=k^{n-1}(a d j I)

                \begin{aligned} &\operatorname{adj}(k I)=k^{3-1} a d j(I) \\\\ &=k^{2} \cdot I \end{aligned}

Hence,  \operatorname{adj}(k I)=k^{2} \cdot I

Posted by

infoexpert27

View full answer

Crack CUET with india's "Best Teachers"

  • HD Video Lectures
  • Unlimited Mock Tests
  • Faculty Support
cuet_ads

Similar Questions

Trending Articles/News

anam-khan

CBSE 12th result 2025 sees more in compartment, JNVs on top, perfect-scorers in minor subjects
anam-khan

Low score in CBSE results? Courses, career options after 12th open to you
anam-khan

CBSE class 10, 12 results: West Bengal CM Mamata Banerjee congratulates successful candidates

Latest Question