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Ayudanta 2 - Rodrigo CofrÇ

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{xn}n!N
x1 = 2, xn+1 =
2xn
xn + 1
n ! 1
1
an
a1 = 1, an+1 =
!
9 + a2n
2
n ! 1
3
ĺım
n"#
"
1
n2 " n + 1 +
1
n2 " n + 2 + . . . +
1
n2 " n + n
#
0
ĺım
n"#
"
1
n
#
n2 + 1
+
2
n
#
n2 + 2
+ . . . +
n
n
#
n2 + n
#
1
2
ĺım
n"#
"
1
n2
+
1
(n + 1)2
+ . . . +
1
(2n)2
#
0
ĺım
n"#
"
1
n
#
n
+
1
n
#
n + 1
+ . . . +
1
n
#
2n
#
0
ĺım
n"#
"
n
n + 1
#n
e$1
ĺım
n"#
"
n" 1
n + 3
#n+2
e$4
ĺım
n"#
"
1 +
1
n + 1
#4n
e4
ĺım
n"#
"
an + b
an + c
#n
e
b!c
a
{an}n!N an > 0 $n % N
ĺım
n"#
an+1
an
= l < 1
ĺım
n"#
an = 0
ĺım
n"#
2n
n
ĺım
n"#
n
nn
ĺım
n"#
an = l ĺım
n"#
|an| = |l|

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