document.write( "Question 476558: what is the diffrence between unit and identity matrix?
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Algebra.Com's Answer #326749 by Edwin McCravy(20056) $\"\"$ $\"About$

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document.write( "Here is the 4×4 unit matrix:\r\n" );
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document.write( "Here is the 4×4 identity matrix:\r\n" );
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document.write( "A unit matrix is a square matrix all of whose elements are 1's.\r\n" );
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document.write( "An identity matrix is a square matrix whose upper left to lower\r\n" );
document.write( "right diagonal elements are 1's and all the other elements\r\n" );
document.write( "are 0's.\r\n" );
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document.write( "Edwin

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