The irrational numbers with two sums of 1 are:(5 pairs)

The irrational numbers with two sums of 1 are:(5 pairs)

0

How to prove pi is irrational?

Suppose ∏ is a rational number, then ∏=a/b,(a, b are natural numbers)
Let f (x)=(x^n)[(a-bx)^n ]/(n! )
If 0