document.write( "Question 1121475: I use Mac Book Pro's graphing utility called Grapher. For the life of me I can not find a command to put an augmented matrix in Row Echelon Form (should be REF under the \"Equations\" menu but its not). Supposedly most graphing utilities \"also have the ability to put a matrix in reduced row echelon form\". That was a quote from appendix B p. B15 in \"College Algebra concepts through functions\" by Sullivan.\r
\n" ); document.write( "\n" ); document.write( "Hard for me to imagine Grapher utility (which appears excellent to me) can not put a matrix in Row Echelon Form....I can find the Matrix symbol without any difficulty.....not sure what to think. \n" ); document.write( "

Algebra.Com's Answer #737367 by ikleyn(52847) $\"\"$ $\"About$

You can put this solution on YOUR website!
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document.write( "I used Grapher long time ago (~ 20 years ago), when it was a self-standing computer application.  \r\n" );
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document.write( "It used matrices for one major purpose: to build and to show isolines of two dimensional arrays (or functions of 2 variables).\r\n" );
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document.write( "I am sure that Grapher allows to put in any matrix, even augmented matrix in row echelon form - it simply \r\n" );
document.write( "does not make or understand the difference between them.\r\n" );
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document.write( "What it, probably, can not do - it is to reduce an augmented matrix to the row echelon form.\r\n" );
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document.write( "It is not so amazing, since such matrix transformation is not the function the Grapher is supposed to do.\r\n" );
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document.write( "For it, many other computer applications exist.\r\n" );
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document.write( "To find appropriate sites, use GOOGLE search with keywords \"augmented matrix row echelon form online calculator\".\r\n" );
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document.write( "For example, these sites\r\n" );
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document.write( "http://www.math.odu.edu/~bogacki/cgi-bin/lat.cgi?c=rref\r\n" );
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document.write( "https://www.emathhelp.net/calculators/linear-algebra/reduced-row-echelon-form-rref-caclulator/\r\n" );
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document.write( "and, probably, many others.\r\n" );
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