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 8

Explain solution RD Sharma class 12 Chapter 6 Adjoint and Inverse of a Matrix exercise Fill in the blanks question 8

Answers (1)

best_answer

Answer  \rightarrow 9

Hint  \rightarrow A(\operatorname{adj} A)=\operatorname{det}(A) I_{n \times n}

Given   \rightarrow A is an invertible matrix of order 3 and \left | A \right |=3

Explanation  \rightarrow(\operatorname{adj} A)=|A|^{n-1}

                \begin{aligned} &=|A|^{3-1} \quad[n=3] \\ &=|A|^{2} \\ &|\operatorname{adj} A|=(3)^{2} \\ &=9 \end{aligned}

               

               

               

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

Latest Question