lim |
x→1 |
x2-3x+2 |
x2-1 |
A.-
| B.
| C.1 | D.0mathop limits |
lim |
x→1 |
x2-3x+2 |
x2-1 |
lim |
x→1 |
(x-1)(x-2) |
(x-1)(x+1) |
lim |
x→1 |
x-2 |
x+1 |
1 |
2 |
1 |
2 |
lim |
x→1 |
| ||
|
A.
| B.0 | C.-
| D.不存在 |
1 |
2 |
A.4x-y-2=0 | B.4x+y-2=O | C.4x+y+2=O | D.4x-y+2=0 |
3 |
22 |
4 |
32 |
n+1 |
n2 |
© 2017-2019 超级试练试题库,All Rights Reserved.