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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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Ol� Arkon,
d� uma conferida no enunciado.. nao teria 1/x na expressao?
abra�os,
Salhab
On 9/20/07, arkon <arkon@bol.com.br> wrote:
>
>
>
> Pessoal algu�m pode, por favor, resolver esta:
>
>
>
> (EN-87/88) Para todo x real, -3 < x2 + ax � 2/x2 � x + 1 < 2 se � s� se:
>
>
>
> a) � 3 < a < 2. b) � 1 < a < 2. c) � 6 < a < 7. d) � 1 < a < 7. e)
> � 6 < a < 2.
>
>
>
> DESDE J� MUITO OBRIGADO
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