document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=978749>Question 978749</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Dear tutor,<BR>\n" );
document.write( "I have attempted 2 calculating processes for a determinant question, here I say Process 1 and Process 2.\r<BR>\n" );
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document.write( "The original question is:<BR>\n" );
document.write( "|2  1 1|<BR>\n" );
document.write( "|1 -1 1|<BR>\n" );
document.write( "|3 -2 3|\r<BR>\n" );
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document.write( "Process 1<BR>\n" );
document.write( "|2  1 1| | 0  0 1| <BR>\n" );
document.write( "|1 -1 1|=|-1 -2 1|=1|-1 -2|=1(5-6)=-1<BR>\n" );
document.write( "|3 -2 3| |-3 -5 3|  |-3 -5|\r<BR>\n" );
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document.write( "Process 2<BR>\n" );
document.write( "|2  1 1| |2  1 1| |2 1 1| |3 5 0|<BR>\n" );
document.write( "|1 -1 1|=|1 -1 1|=|1 2 0|=|1 2 0|=1|3 5|=1(6-5)=1<BR>\n" );
document.write( "|3 -2 3| |5  6 1| |5 6 1| |5 6 1|  |1 2|\r<BR>\n" );
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document.write( "I have checked with many determinant tools which shown that Process A's answer is correct but Process B's is wrong.\r<BR>\n" );
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document.write( "My question is I have checked both Processes(multiplication, addition or substraction)are correct BUT got different answers.\r<BR>\n" );
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document.write( "I am very confused what's wrong with Process B which have correct calculating process but got wrong answer.\r<BR>\n" );
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document.write( "I hope my tutor can explained DETAILEDLY what's going wrong with calculation in Process B for I will attend Precalculus examination later. \r<BR>\n" );
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document.write( "I should show my kindly appreciation 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 #600116 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=600116\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The original question is:<BR>\n" );
document.write( "|2  1 1|<BR>\n" );
document.write( "|1 -1 1|<BR>\n" );
document.write( "|3 -2 3|<BR>\n" );
document.write( "================<BR>\n" );
document.write( "That's 3 by 3 matrix, not a question.<BR>\n" );
document.write( "---<BR>\n" );
document.write( "It's not clear what you show that you tried.<BR>\n" );
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document.write( "You didn't say what you're trying to do, but you probably want to find the determinant.<BR>\n" );
document.write( "Using minors for the 1st row:<BR>\n" );
document.write( "---------<BR>\n" );
document.write( "Det = 2*(-3+2) - 1*(3-3) + 1*(-2+3)<BR>\n" );
document.write( "= -2 - 0 + 1<BR>\n" );
document.write( "= -1<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );