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Urgent..pls help !!

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RC
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PostSubject: Urgent..pls help !! Thu Mar 18, 2010 11:44 pm

1. What are external and internal nodes ??
2. Determine if following wff is valid,satisfiable or unsatisfiable --
leave the relation..just tell how to do such kind pf qs.
What is the condition to get it ??
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PostSubject: Re: Urgent..pls help !! Thu Mar 18, 2010 11:52 pm

to do the second question...if the LHS part can be simplified and say 'p' it could be a complex exp too.

and the RHS is say taken 'q'

and now by modus ponens or chain rule..
p=>q should be 1 if the WFF is valid...
and if we do the conditional elimination

p' + q shud be a tautology..[in truth table]
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PostSubject: Re: Urgent..pls help !! Fri Mar 19, 2010 12:18 am

can u pls d q given in the specimen..
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PostSubject: Re: Urgent..pls help !! Fri Mar 19, 2010 12:20 am

G7 there ??
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PostSubject: Re: Urgent..pls help !! Fri Mar 19, 2010 12:22 am

yea..
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PostSubject: Re: Urgent..pls help !! Fri Mar 19, 2010 12:24 am

dude..i cant reach the specimen paper..!
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PostSubject: Re: Urgent..pls help !! Fri Mar 19, 2010 10:16 am

http://www.scribd.com/doc/28594958/Specimen-Paper-CSc-Solved
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PostSubject: Re: Urgent..pls help !! Fri Mar 19, 2010 7:58 pm

good i found the first one out from wiki
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