Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • Please help! If A is an identity matrix of order 3 and B is a diagonal matrix of order 3 x 3 . Then which of the following is correct ?

If A is an identity matrix of order 3 and B is a diagonal matrix of order 3 x 3 . Then which of the following is correct ? 

  • Option 1)

    a_{11}= b_{12}

  • Option 2)

    a_{13}= b_{23}

  • Option 3)

    a_{22}= b_{22}

  • Option 4)

    a_{12}= b_{22}

 

Answers (1)

best_answer

As we have learned

Unit / Identity Matrix -

A diagonal matrix of order n which has unity for all its elements 

- wherein

 

 For identity matrix a_{ij}= 0 \forall i\neq j \; \; and\; \; a_{ij}= 1

And for diagonal matrix  a_{ij}= 0 \forall i\neq j  

Thus a_{13}= b_23=0

 


Option 1)

a_{11}= b_{12}

Option 2)

a_{13}= b_{23}

Option 3)

a_{22}= b_{22}

Option 4)

a_{12}= b_{22}

Posted by

Himanshu

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Trending Articles/News

anam-khan

JEE Main 2025 session 2 answer key out for BArch, BPlanning; response sheet on jeemain.nta.nic.in
anam-khan

JEE Mains 2025 Paper 2 Answer Key LIVE: BArch final answer key PDF expected soon at jeemain.nta.nic.in
anam-khan

JEE Main 2025 response sheet errors: Delhi HC allows student to apply for JEE Adv, seeks NTA explanation

Latest Question