XX→01 X 1 1+ − = −1 X 1+ − =+ − = +∞A
Câu 2: Tính giới hạn lim ?x
x
→
0
1
x
1
1
+ −
= −
1
x
1
+ −
=
+ −
= +∞
A.→
lim
lim
0
x
. C.x
2
. B.x
2
.x
. D.x
0
x
→
0
1
x
1
1
+ −
= −
1
x
1
+ −
=
+ −
= +∞
A.→
lim
lim
0
x
. C.x
2
. B.x
2
.x
. D.x
0