Please, would anyone help me with this? I'm looking for a proof that pi is irrational.

Question

anonymous · Answer

google

anonymous · Answer

http://en.wikipedia.org/wiki/Proof_that_%CF%80_is_irrational

anonymous · Answer

I did already, the proof I saw made a step I can't follow, so I came here to see if anyone ahs a simpler one.

anonymous · Answer

unlikely. it is not like proving that $\sqrt{2}$ is irrational.  it is going to take some doing no matter which proof you use

anonymous · Answer

Ok then, so could you help me with this crucial step?

"We define the polynomial function:
∀x∈R:f(x)=xn(a−bx)nn!
We differentiate this 2n times, and then we build:
F(x)=∑j=0n(−1)jf(2j)(x)=f(x)+⋯+(−1)jf(2j)(x)+⋯+(−1)nf(2n)(x)
... that is, the alternating sum of f and its first n even derivatives."

I don't get the result of differentiating 2n times, it seems like it's skipping steps.

anonymous · Answer

the wiki proof i am looking at has something similar, is that what you are looking at?
it defines F as the sum of f and its first n even derivatives.

anonymous · Answer

Yes, I guess it could help.

anonymous · Answer

http://www.coolissues.com/mathematics/Pi/pi.htm

anonymous · Answer

Thanks.