document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=938535>Question 938535</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello, I am having issues with my system of equations homework. I was wondering of you could help me. I generally know how to solve them but I cannot get mine to turn out. <BR>\n" );
document.write( "The system is:\r<BR>\n" );
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document.write( "x+y+z+w=6<BR>\n" );
document.write( "2x+3y-w=0<BR>\n" );
document.write( "-3x+4y+z+2w=4<BR>\n" );
document.write( "x+2y-z+w=0\r<BR>\n" );
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document.write( "Thanks in advance! :) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #853425 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(53538)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=853425\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "Hello, I am having issues with my system of equations homework. I was wondering of you could help me. <BR>\n" );
document.write( "I generally know how to solve them but I cannot get mine to turn out. <BR>\n" );
document.write( "The system is:\r<BR>\n" );
document.write( "\n" );
document.write( "x+y+z+w=6<BR>\n" );
document.write( "2x+3y-w=0<BR>\n" );
document.write( "-3x+4y+z+2w=4<BR>\n" );
document.write( "x+2y-z+w=0\r<BR>\n" );
document.write( "\n" );
document.write( "Thanks in advance! :)<BR>\n" );
document.write( "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\r<BR>\n" );
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document.write( "Use advantages of the modern technology.\r<BR>\n" );
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document.write( "Go to web-site www.reshish.com\r<BR>\n" );
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document.write( "Find there free of charge online calculator for solving systems of linear equations.\r<BR>\n" );
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document.write( "Choose the Gauss-Jordan elimination method there.\r<BR>\n" );
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document.write( "Setup the extended matrix of the system and get the step by step solution <BR>\n" );
document.write( "with all accompanying detailed explanations\r<BR>\n" );
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document.write( "x = 1, y = 0, z = 3, w = 2.\r<BR>\n" );
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document.write( "Tutor @mathmate reviewed this problem and gave his interesting suggestions.\r<BR>\n" );
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document.write( "One of his suggestion was that the matrix of the system is ill-defined.\r<BR>\n" );
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document.write( "I checked it by calculating its determinant.\r<BR>\n" );
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document.write( "(Again, I used the online calculator www.reshish.com)\r<BR>\n" );
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document.write( "The determinant of the matrix is &nbsp;54, &nbsp;so it is &nbsp;NOT &nbsp;ill-defined.\r<BR>\n" );
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document.write( "@ikleyn, &nbsp;PhD in &nbsp;Math and &nbsp;Physics, <BR>\n" );
document.write( "with a professional &nbsp;Math education from a renowned university and<BR>\n" );
document.write( "with &nbsp;40 &nbsp;years experience working as a computer programmer <BR>\n" );
document.write( "and a researcher in computational physics/mechanics/civil engineering.\r<BR>\n" );
document.write( "<BR>\n" );
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document.write( "(solid bodies, &nbsp;porous media, &nbsp;heat transfer &nbsp;(thermal conductivity, &nbsp;phase changes, &nbsp;convective heat transfer,<BR>\n" );
document.write( "combined thermal, &nbsp;convective and radiative heat transfer, &nbsp;hydrodynamics, &nbsp;fluid-structure interaction etc.)\r<BR>\n" );
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document.write( " </SPAN>\n" );
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