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[SPAM] [obm-l] problema de cálculo



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Ol=E1 Pessoal!

Algu=E9m pode me ajudar no problema abaixo? N=E3o parece dif=EDcil, mas n=
=E3o consigo o "truque"!!!

Problema: Seja f: IR^n --> IR diferenci=E1vel n=E3o constante. Dado c > 0, =
mostre que existe p em IR^n tal que |p| =3D c e p =E9 paralelo ao gradiente=
 de f em p.

Obrigado desde j=E1,
                              Francisco.

PS.: Ali=E1s, n=E3o consigo nenhuma poss=EDvel interpreta=E7=E3o (geom=E9tr=
ica) para o enunciado!
_________________________________________________________________
Veja mapas e encontre as melhores rotas para fugir do tr=E2nsito com o Live=
 Search Maps!
http://www.livemaps.com.br/index.aspx?tr=3Dtrue=

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<html>
<head>
<style>
.hmmessage P
{
margin:0px;
padding:0px
}
body.hmmessage
{
FONT-SIZE: 10pt;
FONT-FAMILY:Tahoma
}
</style>
</head>
<body class=3D'hmmessage'>
Ol=E1 Pessoal!<br><br>Algu=E9m pode me ajudar no problema abaixo? N=E3o par=
ece dif=EDcil, mas n=E3o consigo o "truque"!!!<br><br>Problema: Seja f: IR^=
n --&gt; IR diferenci=E1vel n=E3o constante. Dado c &gt; 0, mostre que exis=
te p em IR^n tal que |p| =3D c e p =E9 paralelo ao gradiente de f em p.<br>=
<br>Obrigado desde j=E1,<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp=
; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Francisco.<br><br=
>PS.: Ali=E1s, n=E3o consigo nenhuma poss=EDvel interpreta=E7=E3o (geom=E9t=
rica) para o enunciado!<br /><hr />Veja mapas e encontre as melhores rotas =
para fugir do tr=E2nsito com o Live Search Maps! <a href=3D'http://www.live=
maps.com.br/index.aspx?tr=3Dtrue' target=3D'_new'>Experimente j=E1!</a></bo=
dy>
</html>=

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