document.write( "Question 558333: perform matrix row operation and write the new matrix\r
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Algebra.Com's Answer #363029 by Edwin McCravy(20056) $\"\"$ $\"About$

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perform matrix row operation and write the new matrix
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document.write( "1  2  2  2\r\n" );
document.write( "0  1 -1  2   -5R2+R3\r\n" );
document.write( "0  5  4  1\r\n" );
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document.write( "-5R2+R3\r\n" );
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document.write( "-5R2 means to do this work to the side \r\n" );
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document.write( "1. Multiply row #2 by -5 :  -5(0  1 -1  2) = (0 -5  5 -10)\r\n" );
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document.write( "and then +R3 means\r\n" );
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document.write( "2. Add that to row #3  :     (0 -5  5 -10) + (0  5  4  1) = (0  0  9  -9)\r\n" );
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document.write( "3. Replace row #3 by (0  0  9  -9)\r\n" );
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document.write( "1  2  2  2\r\n" );
document.write( "0  1 -1  2   \r\n" );
document.write( "0  0  9 -9\r\n" );
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document.write( "That's the new matrix.\r\n" );
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document.write( "Edwin

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