9x9 matrix using gaussse-jordan method

Replies

• 

  eternalthinker

  Re: 9x9 matrix
  
  Was it a programming assignment (C for instance) ?
• 

  Reya

  Re: 9x9 matrix
  
  @ET: It is not a programming assignment.Gauss-Jordan method comes in Numerical method subject!
  
  @Maria: Did you try something??What answer you got??
• 

  nikeace003

  Re: 9x9 matrix
  
  nice flor..hahaha..can we use elimination method.?
• 

  silverscorpion

  Well, what have you got so far and where are you stuck?
  
  Gauss Jordan elimination is pretty easy, if I remember right..
  
  Just write 2 9X9 matrices side by side, and perform row or column operations on both sides so that, the original matrix becomes a diagonal matrix.
  
  Then, the other matrix will give you the inverse..
• 

  maria flor

  I'm almost at fifth page of the solution to the problem...still working on it.... I'll show the solution maybe tomorrow...
• 

  eternalthinker

  Is this the answer: 😕
  
  0.04 -0.18 0.05 0.04 0.02 0.02 0.01 0.06 0.03
  0.22 -0.31 0.05 0.04 -0.04 -0.08 -0.19 0.18 0.03
  0.1 -0.33 0.15 -0.02 -0.05 -0.57 0.52 0.05 -0.02
  -0.47 0.54 -0.06 0.32 0.18 0.33 -0.01 -0.29 -0.12
  0.09 0.55 -0.26 0.18 -0.22 1.11 -0.96 -0.14 0.12
  0.23 0.3 -0.28 -0.31 -0.1 -0.21 -0.05 0.13 0.12
  0.93 -3.46 1.5 -1.34 0.76 -4.74 3.95 0.69 -0.22
  -0.35 2.77 -1.12 0.33 -0.74 3.62 -3.64 -0.08 0.55
  0.15 -0.25 0.14 -0.32 0.04 -0.34 0.51 0.18 -0.21
• 

  maria flor

  @et: check it by multiplying your answer you got to the given problem. If the product you got will be an identity matrix...then you got the correct answer..
  You're really fast.. I spent almost two nights of solving it but still got the wrong answer!!! You're awesome!!
• 

  maria flor

  find the value of: m,n,p,q,r,s,and t using gauss-jordan method... pls. show your solution
  here are the 7 equations:
  2m-2n+4p-7q+r+2t=24
  3m+2n+8q-3s=17
  3n-p+8r+5t=80
  m+5p-4q-2r+s-2t=12
  2m+4n+2q-3s=12
  m+3q+2s-4t=-11
  2n-3p-q=-13
• 

  maria flor

  hey ET can you show me your solution about the 9x9 matrix???
• 

  eternalthinker

  Hey, I shan't take the credit for it. I just wrote some code to find the inverse. The computer did the work 😉
  Only meant to provide you the final result!
• 

  maria flor

  Oh I see. I thought you were the one who solve it.
• 

  ISHAN TOPRE

  Hey Maria flor is it a complete matrix of 8 rows(Horizontal) and 9 columns(Vertical)?
  And what do you exactly want to do with it when you say 'solve'?
  Tell me I will definitely solve it.
• 

  maria flor

  It is a 9 rows and 9 columns, try to count it. Et never gave any solution and I really need the solution regarding bout 9x9 matrix. I want to practice in solving more than 9x9 matrix and the solution will be my guide.
• 

  ISHAN TOPRE

  Hey Maria flor,I haven't solved it but it is actually simple but lengthy.
  I can tell you how to solve it by Gausse jordan method....
  A=A inverse
  
  IA inverse=A*I
  
  now solve to reduce A to get an Identity matrix
  Hence you will get A inverse..
  Still problem? Refer book for GJ method or google search...😀
• 

  maria flor

  I already know the answer. I tried to solve it but still didn't got the answer. I want to have solution regarding bout this, to be able to know where I made a mistake.... How about the other problem???
• 

  nikeace003

  this was already solved, i guess..anyone still working on this?