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Re: [obm-l] EN-87/88
- To: obm-l@xxxxxxxxxxxxxx
- Subject: Re: [obm-l] EN-87/88
- From: "Marcelo Salhab Brogliato" <msbrogli@xxxxxxxxx>
- Date: Fri, 21 Sep 2007 22:03:58 -0300
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Olá Arkon,
dê uma conferida no enunciado.. nao teria 1/x na expressao?
abraços,
Salhab
On 9/20/07, arkon <arkon@xxxxxxxxxx> wrote:
>
>
>
> Pessoal alguém pode, por favor, resolver esta:
>
>
>
> (EN-87/88) Para todo x real, -3 < x2 + ax – 2/x2 – x + 1 < 2 se é só se:
>
>
>
> a) – 3 < a < 2. b) – 1 < a < 2. c) – 6 < a < 7. d) – 1 < a < 7. e)
> – 6 < a < 2.
>
>
>
> DESDE JÁ MUITO OBRIGADO
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