Can someone help me to solve this.

Prove equality

I have tried to solve it something like this, but I really don't know.

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- May 7th 2006, 11:39 AMOReillyEquality proof
Can someone help me to solve this.

Prove equality

I have tried to solve it something like this, but I really don't know.

- May 7th 2006, 11:55 AMCaptainBlackQuote:

Originally Posted by**OReilly**

RonL - May 7th 2006, 12:21 PMOReilly
This is what is confusing me.

What happened to in

Shouldn't be equal to ? - May 7th 2006, 01:26 PMrgep
iff iff iff iff iff iff iff .

- May 7th 2006, 04:04 PMOReilly
rgep's answer has confused me a little.

I have one question.

Does expression means that beside negation of or means that even turns into ?

If that is true than answer is understable to me, because I can form tautology then.

Then it would be

- May 7th 2006, 10:16 PMrgepQuote:

Does expression means that beside negation of or means that even turns into ?

- May 8th 2006, 02:21 AMOReilly
Thats all I needed. Thanks!