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[obm-l] EXPRESS�O

To: "obm-l" <obm-l@xxxxxxxxxxxxxx>
Subject: [obm-l] EXPRESS�O
From: "arkon" <arkon@xxxxxxxxxx>
Date: Fri, 28 Sep 2007 08:53:33 -0300
Reply-To: obm-l@xxxxxxxxxxxxxx
Sender: owner-obm-l@xxxxxxxxxxxxxx

Algu�m pode, por favor, resolver esta:

(UFPB-78) A express�o sec x + 1/sec x � 1 � id�ntica a:

a) (cos x + cotg x)². b) (sen x + cotg x)². c) (cossec x + cotg x)².

d) (sec x + tg x)². e) (tg x + cotg x)².

DESDE J� MUITO OBRIGADO

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