We're having an exam on math soon, so I'm looking for some source on which I can find math theory proofs, do you guys know any?
I got about tree fiddy of them.
Can you be a little more specific?
Wikipedia has something.
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Predicate logic proofs are way more fun than math proofs.

Except that it counts as an error of judgement during exams.
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Can you be a little more specific?

I need to prove every theory related to differentials
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Ok. Someone tell me where that goes wrong!

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Ok. Someone tell me where that goes wrong!

the 4th line where the dividing happens is shady. denominator man, come on.
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Last edited by Fat Lard at Dec 10, 2011,
Quote by conor-figgy

If the function can be differentialed(don't know the english term) in a certain point, then the function is not um... doesn't have a gap there, if that makes any sense, I can study scientific english only from next year :|

^ for starters.
Sorry, I don't follow... what do you mean by doesn't have a gap there?
Quote by conor-figgy
Sorry, I don't follow... what do you mean by doesn't have a gap there?

Well, it means the function exists, for example in 1/x, the function in x=0 doesn't exist

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****ing awesome.
Last edited by Zeletros at Dec 10, 2011,
So you want to prove that if you can differentiate a function, the function =/= 0 ?
Quote by conor-figgy
So you want to prove that if you can differentiate a function, the function =/= 0 ?

No, the theory that states that if you can differentiate a function in a certain dot, than the function exists in that dot and can be found
Perhaps he means that if a function can be differentiated at a point, then it is continuous at that point.
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Ok. Someone tell me where that goes wrong!

Dividing by 0 will do that.
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Quote by mystical_1
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This is wrong, dividing doesn't work that way.
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This is wrong, dividing doesn't work that way.

It does, it's perfectly right.

Except for the fact that A-B=0, but generally it's a paradox
Yep, it's right. Took a closer look at it.

EDIT: Oh, yeah, there's that dividing by 0
I’m not the man I used to be, I... I can’t go back to Arkham.

Among the churchyard’s mouldering stones I recognise a name – my own.
I have come home to Arkham.

Last edited by Kepulix at Dec 10, 2011,
Quote by IYanoplathizoI
Ok. Someone tell me where that goes wrong!

Do the equation where A=B=1 and you will see where it falls apart
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Just do what everyone does, try and do as much of the proof as you can, then just write what you're trying to prove it equals.
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I need to prove every theory related to differentials

What?

And logic is much cooler than maths.
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What?

And logic is much cooler than maths.

I know.
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I asked 'what?', as in, what do you mean?

What?
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What?

And logic is much cooler than maths.

Well considering math is composed completely of logic, I'm not seeing the difference
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