document.write( "Question 389707: 1. IF :\r
\n" ); document.write( "\n" ); document.write( "[3 0 -3]
\n" ); document.write( "[2 1 0] = 9,
\n" ); document.write( "[0 -2 -1]
\n" ); document.write( "then find:
\n" ); document.write( "[6 0 -3]
\n" ); document.write( "[4 1 0]
\n" ); document.write( "[0 -2 -1]\r
\n" ); document.write( "\n" ); document.write( "2. IF : \r
\n" ); document.write( "\n" ); document.write( "[3 0 -3]
\n" ); document.write( "[2 1 0] = 9,
\n" ); document.write( "[0 -2 -1]
\n" ); document.write( "then find :
\n" ); document.write( "[3 0 -3]
\n" ); document.write( "[(2+0) (1-2) (0-1)]
\n" ); document.write( "[0 -2 -1] \n" ); document.write( "
Algebra.Com's Answer #276404 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "1. IF :\r\n" );
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document.write( "[3  0 -3]\r\n" );
document.write( "[2  1  0] = 9, \r\n" );
document.write( "[0 -2 -1]\r\n" );
document.write( "\r\n" );
document.write( "then find:\r\n" );
document.write( "[6  0 -3]\r\n" );
document.write( "[4  1  0]\r\n" );
document.write( "[0 -2 -1]\r\n" );
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document.write( "The first column has been multiplied by 2, so the value of \r\n" );
document.write( "the determinant has been multiplied by 2, so the value of the\r\n" );
document.write( "determinant is 2x9 or 18\r\n" );
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document.write( "2. IF : \r\n" );
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document.write( "[3  0 -3]\r\n" );
document.write( "[2  1  0] = 9, \r\n" );
document.write( "[0 -2 -1]\r\n" );
document.write( "\r\n" );
document.write( "then find: \r\n" );
document.write( "[  3     0     -3 ]\r\n" );
document.write( "[(2+0) (1-2) (0-1)]\r\n" );
document.write( "[  0    -2     -1 ]\r\n" );
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document.write( "The third row has been added to the second row.  The value of a determinant is\r\n" );
document.write( "not changed if a row (resp., column) [or multiple thereof], is added to another\r\n" );
document.write( "row (resp., column).  Therefore the determinant is still 9.\r\n" );
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document.write( "Edwin
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