document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=148844>Question 148844</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0321205650/algebrahomeworkh>A Survey of Mathematics with Applications</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Can someone please help me?\r<BR>\n" );
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document.write( "5 pts) Determine whether the argument is valid or invalid. <BR>\n" );
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document.write( "	A tree has green leaves or the tree does not produce oxygen.<BR>\n" );
document.write( "	This tree has green leaves<BR>\n" );
document.write( "	------------------------------------------------------------------------<BR>\n" );
document.write( "	&#61532; This tree does not produce oxygen. <BR>\n" );
document.write( "	                .<BR>\n" );
document.write( "the square has actually. . this symbol </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #109187 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=109187\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Determine whether the argument is valid or invalid. \r<BR>\n" );
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document.write( "A tree has green leaves or the tree does not produce oxygen.<BR>\n" );
document.write( "This tree has green leaves<BR>\n" );
document.write( "------------------------------------------------------------------------<BR>\n" );
document.write( "&#61532; This tree does not produce oxygen. <BR>\n" );
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document.write( "Let p be \"A tree has green leaves ; Let q be \"the tree does not produce oxygen\"<BR>\n" );
document.write( "[(p  OR   q) AND p] implies q<BR>\n" );
document.write( "..T....T...T...T...T.....T.....T<BR>\n" );
document.write( "..T....T...F...F...T.....T.....F<BR>\n" );
document.write( "..F....T...T...F...F.....T.....T<BR>\n" );
document.write( "..F....F...F...F...F.....T.....F\r<BR>\n" );
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document.write( "-------------------------------<BR>\n" );
document.write( "The p and q columns are standard<BR>\n" );
document.write( "Form the OR of q and q<BR>\n" );
document.write( "Form the AND of OR and p<BR>\n" );
document.write( "Form the implies of AND and q<BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "As you can see in the \"implies\" column, the argument is valid for all p/q<BR>\n" );
document.write( "conditions. The argument is valid.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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