题目内容
(2010•武汉模拟)
(
+
)=
| lim |
| n→1 |
| 1 |
| 1-x |
| 2 |
| x2-1 |
-
| 1 |
| 2 |
-
.| 1 |
| 2 |
分析:
(
+
)=
=
,从而可求
| lim |
| x→1 |
| 1 |
| 1-x |
| 2 |
| x2-1 |
| lim |
| x→1 |
| 1-x |
| x2-1 |
| lim |
| x→1 |
| -1 |
| x+1 |
解答:解:
(
+
)=
=
=-
故答案为:-
| lim |
| x→1 |
| 1 |
| 1-x |
| 2 |
| x2-1 |
| lim |
| x→1 |
| 1-x |
| x2-1 |
| lim |
| x→1 |
| -1 |
| x+1 |
| 1 |
| 2 |
故答案为:-
| 1 |
| 2 |
点评:本题主要考查了含有0因子的函数的极限的求解,解题的关键是对所求的函数的化简,属于基础试题
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