Demonstration

[Branza]

Can somebody demonstrate that:

[Clembou]

No, I can't but i will give you some indications for demonstrate your formulate if you turn your message into a message with courtesy formulate...

[Zweig]

Hi,

From Bernoulli's inequality, we have :



So, it suffices to show that :



Or,



It's well-known that : and , then , as we wanted.

[Djmaxgamer]

Hi, firstly I wanna point out the fact that your title isn't suitable : some rules were instorded on this forum (in french, so i understand you) but you must put an adapted tittle.
As for me I can't answer ya but i've an idea how to demonstrate that... if I achieve it, i'll tell you

[Branza]

Thank you for understanding ,i will expect your indication.
I did not intentionally break the rules,i can't understand French.

[Zweig]

Using AM-GM, it suffices to show that :

[Dominique Lefebvre]

STOP!!

Vous êtes ici sur un forum francophone. les participants doivent faire l'effort de s'exprimer en français, même si celui-ci est parfois approximatif.

Dominique