document.write( "Question 925063: Hi, I was wondering if I could please have help on this proof?! We were introduced to two new rules that I am confused on!\r
\n" ); document.write( "\n" ); document.write( "1) B > D\r
\n" ); document.write( "\n" ); document.write( "2) B v D /D \n" ); document.write( "
Algebra.Com's Answer #561286 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "1)  B -> D\r\n" );
document.write( "2)  B v D\r\n" );
document.write( "/   D\r\n" );
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document.write( "3)  D v B               2       Commutation\r\n" );
document.write( "4)  ~~D v B             3       Double Negation\r\n" );
document.write( "5)  ~D -> B             4       Material Implication\r\n" );
document.write( "6)  ~D -> D             5,1     Hypothetical Syllogism\r\n" );
document.write( "7)  ~~D v D             6       Material Implication\r\n" );
document.write( "8)  D v D               7       Double Negation\r\n" );
document.write( "9)  D                   8       Tautology\r\n" );
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\n" ); document.write( "\n" ); document.write( "Hopefully that helps. If not, then let me know. Also, please point out the two rules that confuse you so I can go over them.\r
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\n" ); document.write( "\n" ); document.write( "If you need more help, feel free to email me at jim_thompson5910@hotmail.com\r
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