Math Question???

khemer_85 · second grade Joined: 12 Nov 2005 Posts: 60

Hello,

Is the following demonstration correct??
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Not Study = Fail
Study = Not Fail

Addition:

Not Study + Study = Fail + Not Fail

Study (Not + 1) = Fail (Not + 1)

(Not + 1) both side cancel each other.

Study = Fail
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What do you think?

Singachea · fourth grade Joined: 19 Nov 2005 Posts: 258

I saw this one yesterday... Razz

The easiest explanation is that Not is boolean not numberical, and it will be non-sense to say Not A + A instead of Not A OR A which is the universal set. Therefore, it still satisfies that Study' OR Study is the same as Fail OR Fail'. We can't factor the logical boolean.

If you are convinced to believe that Not is numberical, let's see:

*Suppose Fail = 0, then Study = 0. Hence Study = Fail (satisfied) but it's not correct that study is 0.

*If Fail # 0, then Study # 0 and the equation becomes:
(Not+1)(Study-Fail)=0 then Not + 1 = 0 OR Study - Fail = 0

For Study = Fail, it leads Not = 1 > 0 (unaccepted)

Therefore the last result is that Not = -1 which satisfies the equation Study(Not +1) = (Not+1)Fail no matter what Study and Fail are.

guitarman · fourth grade Joined: 04 Nov 2005 Posts: 728

woo... hmm.. i have no comment on this.. but chea has his point about NOT is indeed a boolean set. No matter whats, study hard and you will pass your exams Laughing

ad-vuth · Posted: Sun Dec 04, 2005 11:53 am Post subject: Re: Math Question???

Singachea · fourth grade Joined: 19 Nov 2005 Posts: 258

Actually, i was not serious, but it seemed to be coincident that i received this joke a day before he posted it Razz