----- Original Message -----
Sent: Tuesday,
March 11, 2003 6:09 PM
Subject: RE: [obm-l]
AJUDA COM LIMITES
Carissimo Gabriel,
1) lim (x->3) (raiz(x^2+16) – 5)
(raiz(x^2+16) +5)/((x^2-3x) (raiz(x^2+16) + 5)) = lim(x->3) (x^2-9)/
)/((x^2-3x) (raiz(x^2+16) + 5)) =
= lim(x->3)(x+3)(x-3)/x(x-3) raiz(x^2+16) + 5) = lim(x->3)
(x+3)/x raiz(x^2+16) + 5) = 6/3(5) = 3/5.
2) lim(x->00) raiz(x+1)/raiz(9x+1) =
lim(x->00) raiz(x)*raiz(1+1/x) / raiz(x)*raiz(9+1/x) =
raiz(1+1/x)/raiz(9+1/x) = 1/9
3) lim(x->0) (1-cosx)(1+cosx)/x^2(1+cosx) =
lim(x->0) (sinx)^2/(x^2*(1+cosx)) = lim(x->0) ((sin x)/x)^2 * 1/(1+cosx)
= ½
Acho que os
resultados sao esses caro amigo.
Leandro.
-----Original Message-----
From: owner-obm-l@sucuri.mat.puc-rio.br
[mailto:owner-obm-l@sucuri.mat.puc-rio.br] On
Behalf Of Afemano
Sent: Tuesday, March 11, 2003
12:00 PM
To: obm-l@mat.puc-rio.br
Subject: [obm-l] AJUDA COM LIMITES
Olá, alguém pode me ajudar com esse
problemas "simples" ??
1) lim(x-> -3)
(raiz(x^2 + 16) - 5 )/ ( x^2 - 3x )
2) lim(x-> +00) ( raiz(x +
1) ) / ( raiz(9x + 1) )
3) lim(x-> 0) ( 1 - cosx ) / x^2