# Thread: Real Analysis: Fibonnaci Numbers 2

1. ## Real Analysis: Fibonnaci Numbers 2

Here is the problem:

2. Originally Posted by Phyxius117
Here is the problem:

(1) Prove that $\displaystyle |b_{n+1}-b_n|=\frac{1}{F_nF_{n+1}}$ using fact (2);

(2) Now use fact (1) to prove what you want.

Tonio