# Thread: Help me to find the little mistake in this demostration about Cauchy sequences

1. ## Help me to find the little mistake in this demonstration about Cauchy sequences

My Real Analysis teacher told us that there is a mistake at the end of this demonstration. I am supposed to find it. Can you help me please? It's in Spanish but we all know that the mathematical language is universal. This demonstration consists in proving that the sequence (Sm)=(m/2^m) is convergent by determinating if is a Cauchy sequence at first.

2. ## Re: Help me to find the little mistake in this demostration about Cauchy sequences

How do I prove that (p/2^p)>(1/2^p)?