document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=82428>Question 82428</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve each matrix equation for X\r<BR>\n" );
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document.write( "1  0  0\r<BR>\n" );
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document.write( "0  1  0\r<BR>\n" );
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document.write( "0  0  1 X\r<BR>\n" );
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document.write( "= 4<BR>\n" );
document.write( "  -5<BR>\n" );
document.write( "  3 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #59043 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=59043\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Since we have the identity matrix\r<BR>\n" );
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document.write( "1 0 0 \r\n" );
document.write( "0 1 0\r\n" );
document.write( "0 0 1\r\n" );
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document.write( "multiplied by matrix X we have\r<BR>\n" );
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document.write( "|1 0 0 |\r\n" );
document.write( "|0 1 0 | X= X\r\n" );
document.write( "|0 0 1 |\r\n" );
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document.write( "In other words, the identity matrix I times X is\r<BR>\n" );
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document.write( "I*X=X\r<BR>\n" );
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document.write( "So our answer is\r<BR>\n" );
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document.write( "  |4 |\r\n" );
document.write( "X=|-5|\r\n" );
document.write( "  |3 |\r\n" );
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