document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1161623>Question 1161623</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Determinants: Let M = (<BR>\n" );
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document.write( ") is a 2x2 matrix.<BR>\n" );
document.write( "a. For which values of det M does M have an inverse?<BR>\n" );
document.write( "b. Write down all 2x2 bit matrices with determinant 1. (Remember bits are either 0<BR>\n" );
document.write( "or 1 and 1+1 = 0 in bits)<BR>\n" );
document.write( "c. Write down 2x2 bit matrices with determinant 0 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #785249 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52787)</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=785249\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
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document.write( "Regarding (a), the answer is det (M) =/= 0.\r\n" );
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document.write( "Regarding (b), if you post me at least two such matrices for the task (b), \r\n" );
document.write( "I promise you to post you all the other such matrices, in response.\r\n" );
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