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Re: [obm-l] meu professor endoidou!(derivada de ln(cos(x)) )

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Subject: Re: [obm-l] meu professor endoidou!(derivada de ln(cos(x)) )
From: Eduardo Wilner <eduardowilner@xxxxxxxxxxxx>
Date: Sun, 19 Mar 2006 15:30:36 +0000 (GMT)
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Se f(x) = ln(w(x)), f'(x) = w'(x)\w(x)

Tiago Machado <jaspier@gmail.com> escreveu:

Não consigo entender como a dereivada de ln(cos(x)) pode ser igual a -sin(x)/cos(x)...

Alguem pode explicar ou vou continuar achando que meu professor endoidou!

Obrigado

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References:
- [obm-l] meu professor endoidou!(derivada de ln(cos(x)) )
  - From: Tiago Machado

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