Turn on thread page Beta
    • Thread Starter
    Offline

    15
    ReputationRep:
    So that it looks like this?

    \begin{pmatrix} 1&0&0 \\ 0&0&0 \\ 0&0&1 \end {pmatrix}
    • Community Assistant
    Online

    20
    ReputationRep:
    Community Assistant
    (Original post by will'o'wisp2)
    So that it looks like this?

    \begin{pmatrix} 1&0&0 \\ 0&0&0 \\ 0&0&1 \end {pmatrix}
    What is your question exactly?

    If you're looking for a matrix to multiple by the id. matrix to get THAT one in your OP, then well, it's the identity matrix! The matrix you're looking for is in your own post.
    • Thread Starter
    Offline

    15
    ReputationRep:
    (Original post by RDKGames)
    What is your question exactly?

    If you're looking for a matrix to multiple by the id. matrix to get THAT one in your OP, then well, it's the identity matrix! The matrix you're looking for is in your own post.
    The question is, is \begin{pmatrix} 1&0&0 \\ 0&0&0 \\ 0&0&1 \end {pmatrix}

    and elementary matrix?
    • Community Assistant
    Online

    20
    ReputationRep:
    Community Assistant
    (Original post by will'o'wisp2)
    The question is, is \begin{pmatrix} 1&0&0 \\ 0&0&0 \\ 0&0&1 \end {pmatrix}

    and elementary matrix?
    Then no. Do you see why?
    • Thread Starter
    Offline

    15
    ReputationRep:
    (Original post by RDKGames)
    Then no. Do you see why?
    No because i thought you could multiply the middle row by 0 apparently not....

    Edit: oh so the rule is multiply a row by a non zero constant, ye i got it now thanks a bunch
    • Community Assistant
    Online

    20
    ReputationRep:
    Community Assistant
    (Original post by will'o'wisp2)
    No because i thought you could multiply the middle row by 0 apparently not....
    Row multiplication is permitted for any nonzero constant.
    • Thread Starter
    Offline

    15
    ReputationRep:
    (Original post by RDKGames)
    Row multiplication is permitted for any nonzero constant.
    Thank you
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: November 8, 2017

University open days

  • Southampton Solent University
    All faculties Undergraduate
    Sun, 18 Nov '18
  • University of Bradford
    All faculties Undergraduate
    Wed, 21 Nov '18
  • Buckinghamshire New University
    All Faculties Postgraduate
    Wed, 21 Nov '18
Poll
Black Friday: Yay or Nay?
Useful resources

Make your revision easier

Maths

Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

Equations

How to use LaTex

Writing equations the easy way

Equations

Best calculators for A level Maths

Tips on which model to get

Student revising

Study habits of A* students

Top tips from students who have already aced their exams

Study Planner

Create your own Study Planner

Never miss a deadline again

Polling station sign

Thinking about a maths degree?

Chat with other maths applicants

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.