[obm-l] determinantes

To: obm-l@xxxxxxxxxxxxxx
Subject: [obm-l] determinantes
From: "Julio Sousa" <juliosousajr@xxxxxxxxx>
Date: Tue, 12 Jun 2007 21:43:13 -0300
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Provar que:

| cos^2(a) 2sen^3(a) 1 |

| cos^2(b) 2sen^3(b) 1 | = 0

| cos^2(c) 2sen^3(c) 1 |