Fundamentals - a sure shot for aieee

13

deepanshu001 agarwal ·2009-04-22 11:07:44

@ philip sry dude typo tha i meant that only
one last query ppl...
are ol of the equivalent and can they be replaced by + as done by philip
\rightarrow \Rightarrow \Leftrightarrow

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1

vector ·2009-04-30 12:46:53

[1]

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13

deepanshu001 agarwal ·2009-04-30 12:44:09

gud 1....

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1

vector ·2009-04-30 12:36:04

u just think abt a statement involving if n only if n u ll be able to make truth table . give it atry

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13

deepanshu001 agarwal ·2009-04-30 12:29:56

u ve memorized it or dre is sum logic behind it...

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1

vector ·2009-04-30 12:26:46

if n only if truth table is
t t t
t f f
f t f
f f t

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13

deepanshu001 agarwal ·2009-04-30 12:13:10

how do v draw the truth table for this if nd only if wale sign ki liye...

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1

Â°áƒ¦â€¢à¹“ÑÏ…Î ·2009-04-23 23:22:45

itz d

drw d equivalent truth table n do

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13

deepanshu001 agarwal ·2009-04-23 05:06:43

yes plz persuade ppl to ans this one

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1

Pavithra Ramamoorthy ·2009-04-23 04:56:05

yup.. deepanshu.. i too wanted to kno how to solve it...

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13

deepanshu001 agarwal ·2009-04-23 04:34:29

sriraghav can u plz ans my above ques...
found it in vit brochure..

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1

sriraghav ·2009-04-23 01:22:25

no ---> and <---> are different.....

u can see this link for <---->

http://targetiit.com/iit_jee_forum/posts/aieee2008_8375.html

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13

deepanshu001 agarwal ·2009-04-22 11:24:58

bahut mehnat se type kiya hai sum1 plz help me ...

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13

deepanshu001 agarwal ·2009-04-22 11:24:18

Let P,Q,R and S be statments and suppose that if rightarrow P\rightarrow Q\rightarrow R\2.\rightarrow P then \sim S\rightarrow R

a. S\rightarrow \simR

b. \simQ\rightarrowS

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1

Philip Calvert ·2009-04-22 10:46:31

p'+ (pq')'

which is the same as p'+q

so (d)

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1

Thedarkknight ·2009-04-22 11:02:22

To the best of my knowledge.yes

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13

deepanshu001 agarwal ·2009-04-22 10:58:24

ok so fallacy and contradiction r the same ...is it so ?

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1

Philip Calvert ·2009-04-22 10:56:46

i did not write
p'+ (pq')

see carefully

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Thedarkknight ·2009-04-22 10:54:21

Like philip said it is very basic boolean algebra,tautology is when the result is always true,contradiction or fallacy is when the expression always gives false.