document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1129413>Question 1129413</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Evaluate the determinant, using row or column operations whenever possible to simplify your work.\r<BR>\n" );
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document.write( "[0 0 4 6]<BR>\n" );
document.write( "[2 1 1 3]<BR>\n" );
document.write( "[2 1 2 3]<BR>\n" );
document.write( "[3 0 1 7]<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #745986 by </B><A HREF=/tutors/aboutme.mpl?userid=t0hierry><B>t0hierry(194)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=t0hierry><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=t0hierry><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=745986\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "[0 0 4 6]<BR>\n" );
document.write( "[2 1 1 3]<BR>\n" );
document.write( "[2 1 2 3]<BR>\n" );
document.write( "[3 0 1 7]\r<BR>\n" );
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document.write( "We start from the first row and we get:<BR>\n" );
document.write( "4* [2 1 3]  <BR>\n" );
document.write( "   [2 1 3]<BR>\n" );
document.write( "   [3 0 7]<BR>\n" );
document.write( "6* [2 1 1]  <BR>\n" );
document.write( "   [2 1 2]<BR>\n" );
document.write( "   [3 0 1]<BR>\n" );
document.write( "again from last row for the first term<BR>\n" );
document.write( "3*0 + 7*0 = 0<BR>\n" );
document.write( "same for the second term\r<BR>\n" );
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document.write( "3*1 + 0 = 3<BR>\n" );
document.write( "Now for the sign: it's minus\r<BR>\n" );
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document.write( "so I find -3.<BR>\n" );
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document.write( "</TD></TR></TABLE>\n" );