GI ỚI HẠN DÃY SỐ
3
6n 2n 1
lim
n 2n
2 2
1 n 2n lim
5n n
3
2n 4n 3n 3 lim
n 5n 7
2 4
2n n 2 lim
3n 5
3 2
n 4n 5
lim
5 4
lim
2 2
7n 3n 2 lim
3 2
3n 2n 1 lim
2n n
2
lim
5n 1 2n 3
5 4
3n 7n 11 lim
2
2n 3 lim
n 5n
2 2
2n n lim
1 3n
3 3
lim
n 2
4 2
2n 3n 2 lim
2n n 3
3n6 7n3 5n 8 lim
n 12
2
lim
3n 2
lim 1 2n n
2
1 2 n lim
n
2
n 2 4 2n
lim
3n n 2
4 3
1 2 n lim
n 1 3 (2n 1) lim
2n n 1
2
1 2 n
lim
11n n 2
2
2
1 2 n
4
lim
n n
4
lim
2.3 4
n n
3 1 lim
2 1
n
3 2.5 lim
7 3.5
n n
lim
2 3.5
n n
n 1 n 1
( 3) 5 lim
( 3) 5
31) lim 3n 1 2n 1 32) lim n 1 n n 33) lim n2 n 1 n 37) lim n2n n21
lim
n 2 n 1
GIỚI HẠN HÀM SỐ
2
lim 3x 7x 11
2 1
7x 11 lim
x
x x
x 2
3x 1 2 3x lim
x 1
7x 11 lim 2 1
x
x
x
3
x
x
2
x 9
x 3 lim
9x x
2 3 x
3x x 5 lim
4
x
2x 3x 5 lim
x 2x
3 x
lim
3x 2
6 3 x
x 5x 1 lim
5x 2
2 3 2 x
lim
6x 3x 2
3 x lim
3 x
x 3
3 x
lim
3 x
3 x lim
3 x
x 2 x lim
2
x 2
4 x lim
2 x
3 2
x 2 2 lim
4
2
x 3
x 27x
lim
2x 3x 9
4 2
x 2
x 16 lim
x 6x 8
5 3
x
lim
2x 1 x x
2 x
x x 2x lim
2x 3
x
x lim x 1
xlim 2x 5x 3x 1
xlim 2x 5x 1
x 2
2x 1
lim
x 2
2x 1 lim
x 2
xlim 2x 5x 3x 1
2 x
x 5 lim
3
2
x 2
x 8
lim
2 2
2x 5x 3 lim
x 3
3 2
x 0
x 1 1 lim
2 3 x
2x x 10 lim
9 3x
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Trang 234 35 36 37 38.
3
2
x 3 3
lim
x 2 lim
x 4x
x 1
x 1 lim
2
x 0
x x 1 1 lim
3x
3
x 3
3 x
lim
27 x
3 2
x 2
x 8 lim
x 2x
2 2
x 2
x 3x 10 lim
3x 5x 2
2
x 2
lim
x 2
2 2
x 1
x 4x 3 lim
(x 1)
x 1
x 1
lim
2
x 3
x 2x 15 lim
x 3
2
x 5
lim
3
x 1
x 1 lim
x(x 5) 6
2 2
x 4
x 3x 4 lim
x 4x
2
x 4
lim
2
x 2
lim
4 2
x 1
x 1 lim
x 2x 3
3 2 2
x 2
lim
x 2
x 2
4
x 7
x 9 2 lim
x 7
5 x lim
3x 5 1 lim
x 2
x 0
x lim
1 x 1
x 1 lim
6x 3 3x
2
x 0
lim
x
2
x 5
x 4 3 lim
x 25
x 0
lim
x
x 3
x 3 lim
2x 10 4
x 2 2 lim
x 6
2x 3x 1 lim
x 1
2
x 1
x 1
lim
x 2x 3
lim
x
x 0
lim
x
x 1
2x 1 x lim
x 1
x 0
lim
x
2
x 1
lim
x 3x 2
2
x 0
lim
x
x 4
lim
lim 4x 1 3
2
x 1
lim
3 2
x 1
lim
2 2
x 0
lim
x 9
7 2x 5
lim
x 3
2 2 x
x 3x 10 lim
3x 5x 2
2 3 x
lim
2 2 x
lim (x 1)
x
lim
x 5
2 1 lim
( 5) 6
x
x
x x
2 4 x
x 3x 4 lim
x 4x
2 x
lim
5
x
lim
1 lim
x
x
3 6 4 2 x
lim
x 2
8 2x 2
lim
x 2
2 x 3x lim
3 x 2x
f x 3x 1 ; x2 1
x 1 ; x 1
f (x)
2
f (x)
khi x2
x
xlim x 7x 1 x 3x 2
x lim x 4x 1 x 9x
x
x
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