document.write( "Question 256456: find M^-1 (inverse)\r
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Algebra.Com's Answer #188563 by Edwin McCravy(20060)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "To find the inverse, augment it\r\n" );
document.write( "with the identity on the right, like this\r\n" );
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document.write( "Now use row operations to get the identity\r\n" );
document.write( "on the left, and then the inverse will be\r\n" );
document.write( "on the right:\r\n" );
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document.write( "Add row 1 to row 2 to get a 0 in row 2 column 1\r\n" );
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document.write( "Multiply row 1 by -2\r\n" );
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document.write( "Add row 2 to row 1:\r\n" );
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document.write( "Multiply Row 2 by 3 and Row 3 by -4\r\n" );
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document.write( "Add row 2 to row 3\r\n" );
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document.write( "Add Row 3 to Row 1\r\n" );
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document.write( "Multiply Row 3 by 3\r\n" );
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document.write( "Add Row 3 to Row 2\r\n" );
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document.write( "Divide Row 1 by -2\r\n" );
document.write( "Divide Row 2 by 12\r\n" );
document.write( "Divide Row 3 by -3\r\n" );
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document.write( "Now we have the identity on the left and so\r\n" );
document.write( "the inverse is on the right:\r\n" );
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document.write( "Edwin
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