PF – Problema 14

Posted: März 6th, 2009 | Author: | Filed under: Pierre Fermat | No Comments »

\left ( \frac{x+y}{2} \right ) ^n \leq \frac{x^n+y^n}{2}

PF – Problema 49 {qed}

Posted: Februar 14th, 2009 | Author: | Filed under: Pierre Fermat | No Comments »

Demostrar que \frac{1}{3}<ln(1.5)<\frac{1}{2}

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PF – Problema 8

Posted: Februar 14th, 2009 | Author: | Filed under: Pierre Fermat | No Comments »

Si n>1 probar que la suma \displaystyle \sum_{k=0}^n \frac{1}{k} no es un entero.

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