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August 31st, 2013, 12:12 PM  #1 
Newbie Joined: Aug 2013 Posts: 2 Thanks: 0  gaussellimination problem
Dear All! I have a problem, and I need some help, The problem is: I have a linear equation system as follows: Code: 500 500 0  0  F1x 500 600 100 * d2x= 0  0 10 100 d3x  5  Best ragards, Ábel P.s.: I'm sorry if it's totally wrong what i've wrote. 
August 31st, 2013, 02:25 PM  #2 
Global Moderator Joined: May 2007 Posts: 6,511 Thanks: 585  Re: gaussellimination problem
Try to clarify the notation.

August 31st, 2013, 07:32 PM  #3 
Math Team Joined: Dec 2006 From: Lexington, MA Posts: 3,267 Thanks: 407  Re: gaussellimination problem Hello, p3n3m! You seem to have: 
September 1st, 2013, 12:03 AM  #4 
Newbie Joined: Aug 2013 Posts: 2 Thanks: 0  Re: gaussellimination problem
d2x,d3x anf F1x are all unknowns. I'm pretty sure it has solution: if we calculate the matrix product, we get the following equations: 500 d2x=F1x 600 d2x100 d3x=0 100 d2x + 100 d3x =5 from the last 2: 6 d2x= d3x > d2x=0.01 d3x=0.06 > f1x= 5 my problem is that I can't use the gauss ellimination because I think F1x is on the wrong side 
September 1st, 2013, 12:05 PM  #5  
Senior Member Joined: Mar 2012 From: Belgium Posts: 654 Thanks: 11  Re: gaussellimination problem Quote:
Rearranging we get: Which we can transform in this matrix system again.  

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