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January 22nd, 2010, 12:53 PM  #1 
Newbie Joined: May 2008 Posts: 11 Thanks: 0  Solve a system of equations?
OK, I know this can be done... I've seen the result. But I want to know HOW to solve the following for a, b, and c. ax1^2+bx1+c=y1 ax2^2+bx2+c=y2 ax3^2+bx3+c=y3 Of course, I am looking for solutions in terms of x and y  for example, I don't want something like a=bc^24x3, I'm looking for a=x3y23x1  or whatever it really is. 
January 22nd, 2010, 01:17 PM  #2  
Global Moderator Joined: May 2007 Posts: 6,581 Thanks: 610  Re: Solve a system of equations? Quote:
 
January 22nd, 2010, 07:41 PM  #3 
Senior Member Joined: Feb 2009 From: Adelaide, Australia Posts: 1,519 Thanks: 3  Re: Solve a system of equations?
Using Cramer's rule: Let If t does not equal 0 then 

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