document.write( "Question 34777: I am having a really hard time understanding the Gauss-Jordan Method. I have reviewed everything I could possibly find on this subject and it seems like there is no formal way to do this. I need a method to the madness? Please help if you can...\r
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document.write( "Use the Gauss-Jordan Mathod to solve these systems of linear equations.\r
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document.write( "Problem #1:
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document.write( "x+y+z=5
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document.write( "y+z=1
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document.write( "2z=4\r
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document.write( "Problem #2:
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document.write( "x+y=1
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document.write( "2x+3y=0\r
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document.write( "Your explanations of how to understand this method is greatly appreciated.
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document.write( "Thanks! \n" );
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Algebra.Com's Answer #21088 by checkley71(8403)![]() ![]() ![]() You can put this solution on YOUR website! CREATING A MATRIX WE GET\r \n" ); document.write( "\n" ); document.write( "1 1 1 \n" ); document.write( " \n" ); document.write( "0 1 1 OR1(2-0)-1(0-0)+1(0-0)OR 1*2-1*0+1*0 OR 2-0=0 OR 2 IS THE DENOMINATOR \n" ); document.write( " \n" ); document.write( "0 0 2\r \n" ); document.write( "\n" ); document.write( "FOR X WE GET \r \n" ); document.write( "\n" ); document.write( "5 1 1\r \n" ); document.write( "\n" ); document.write( "1 1 1 OR 5(2-0)-1(2-4)+1(0-4) OR 10+2-4 OR 8 DIV BY 2 WE GET 8/2=4 FOR X\r \n" ); document.write( "\n" ); document.write( "4 0 2\r \n" ); document.write( "\n" ); document.write( "FOR Y WE GET\r \n" ); document.write( "\n" ); document.write( "1 5 1\r \n" ); document.write( "\n" ); document.write( "0 1 1 OR 1(2-4)-5(0)+1(0)OR -2-5*0+1*0 OR -2 DIV BY 2 WE GET 2/-2=-1 FOR Y\r \n" ); document.write( "\n" ); document.write( "0 4 2\r \n" ); document.write( "\n" ); document.write( "FOR Z WE GET\r \n" ); document.write( "\n" ); document.write( "1 1 5\r \n" ); document.write( "\n" ); document.write( "0 1 1 OR 1(4-0)-1(0)+5(0) OR 4-0+0 OR 4 DIV BY 2 WE GET 2 FOR Z \r \n" ); document.write( "\n" ); document.write( "0 0 4 \r \n" ); document.write( "\n" ); document.write( "THUS X=4, Y=-1 & Z=2\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "X+Y=1 & 2X+3Y=0 THEN X=1-Y SUBSTITUTING 1-Y FOR X IN EQUATION TWO WE GET\r \n" ); document.write( "\n" ); document.write( "2(1-Y)+3Y=0 OR 2-2Y+3Y=0 OR 2+Y=0 OR Y=-2 THEN X=1-(-2) OR X=3 \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |