document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=873856>Question 873856</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 15.	Determine whether the following symbolized argument is valid or invalid by identifying its form.  In some cases the argument must be rewritten using double negation before it has a named form.  An argument without a specific name is invalid.\r<BR>\n" );
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document.write( "H &#8835; ~M<BR>\n" );
document.write( "M<BR>\n" );
document.write( "________	          .<BR>\n" );
document.write( "~H<BR>\n" );
document.write( "	<BR>\n" );
document.write( "a.	DA—invalid.<BR>\n" );
document.write( "b.	MP—valid.<BR>\n" );
document.write( "c.	AC—invalid.<BR>\n" );
document.write( "d.	MT—valid.<BR>\n" );
document.write( "e.	HS—valid.<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 #527173 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=527173\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This is a valid argument and it's valid by the Modus Tollens (MT) rule. </SPAN>\n" );
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