[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [obm-l] DETERMINANTE
- To: obm-l@xxxxxxxxxxxxxx
- Subject: Re: [obm-l] DETERMINANTE
- From: "Igor Battazza" <battazza@xxxxxxxxx>
- Date: Tue, 25 Sep 2007 10:13:37 -0300
- Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; bh=/gwXfGs2hrgenSDtw7D9ESYDwsvpvkNjwhChm3PncW0=; b=thZ0NADH1fCXxEHP0BiAOJfEWXyS5PMxfsWn63ci08Z/gTHfdG59QkWdQWsXPXtXAI4ctp4+uArr3D5TKLnrLSfEDd9DU6Qw9aanBlMUoQgsaWgYuaUDHie+tpa+6VRuZa53jUdHP5tSgmsbgE1hsC3mmU7usUUT9x0BC/j1Sko=
- Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=bUw+nEUZcibqYTFqdCMV7FQ9d/txLKYx78FZUB1sAXg/Bvs1dWx9eQHT3XwMayQvb6v7wxRB67aEgiPmuBZQ8r/2nmD8fnUsh9k4OMGqXiy0yTYqdjn5hoUzPQ7bsaGsuhA8035uNB3rbXcBdyXjZEHAx01co3vQhOKtl3nFOp8=
- In-reply-to: <JOXAOG$F787C427CFABFE8E3895F361951B5EA2@xxxxxxxxxx>
- References: <JOXAOG$F787C427CFABFE8E3895F361951B5EA2@xxxxxxxxxx>
- Reply-to: obm-l@xxxxxxxxxxxxxx
- Sender: owner-obm-l@xxxxxxxxxxxxxx
Olá Arkon,
|X A 1|
|B X 1| = X² + A + AB - X - AX - AB = X² - AX + A - X = (X - 1)(X - A)
|1 A 1|
Logo o determinante é nulo para X = 1 ou X = A (letra c). Acho que é isso.
[]'z
Em 25/09/07, arkon<arkon@xxxxxxxxxx> escreveu:
>
>
>
> Pessoal alguém pode, por favor, resolver esta
>
>
>
> (UFPB-77) O determinante | X A 1 | será nulo para:
>
> | B X 1
> |
>
> | 1 A 1
> |
>
>
>
> a) A = B. b) X = B. c) X = A. d) X = -1. e) Nenhuma das
> respostas.
>
>
>
> DESDE JÁ MUITO OBRIGADO
=========================================================================
Instruções para entrar na lista, sair da lista e usar a lista em
http://www.mat.puc-rio.br/~nicolau/olimp/obm-l.html
=========================================================================