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Re: [obm-l] SENOIDAL

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Subject: Re: [obm-l] SENOIDAL
From: Fabio Dias Moreira <fabiodias@xxxxxxxxxx>
Date: Fri, 13 Dec 2002 11:40:22 -0200
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On Fri, Dec 13, 2002 at 12:42:08AM -0300, pichurin wrote:
> resolva a equação
> 3sen^2(x) -2sqrt(3)sen(x)cos(x) -3cos^2(x)=0
> [...]

Pense nas expansões de sen(2x) e cos(2x) pelas fórmulas de adição.

[]s,

-- 
Fábio Dias Moreira (fabiodias@ieg.com.br)
GPG fingerprint: 72F8 289F 1118 D225 700E  28D9 6A53 9016 BBF3 190A

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