x+1 |
x-1 |
A.2 | B.
| C.-
| D.-2 |
x+1 |
x-1 |
x+1 |
x-1 |
-2 |
(x-1)2 |
1 |
2 |
1 |
2 |
1 |
6 |
1 |
2 |
A.既有极大值,也有极小值 |
B.既有极大值,也有最小值 |
C.有极大值,没有极小值 |
D.没有极大值,也没有极小值 |
π |
2 |
A.1 | B.2π | C.π | D.4 |
1 |
2 |
1 |
4 |
A.30° | B.45° | C.60° | D.90° |
1 |
3 |
7 |
3 |
A.30° | B.150° | C.45° | D.135° |
A.y=9x+8 | B.y=12x+11 | C.y=9x-8 | D.y=12x-11 |
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