问题
选择题
|
答案
lim x→1
=x
-xx x-1 lim x→1
=(x
-x)′x (x-1)′ lim x→1
=
x3 2
- 11 2 1
×13 2
- 1=1 2 1 2
故答案选A
|
lim x→1
=x
-xx x-1 lim x→1
=(x
-x)′x (x-1)′ lim x→1
=
x3 2
- 11 2 1
×13 2
- 1=1 2 1 2
故答案选A