x+y |
1+xy |
1 |
5 |
1 |
2 |
1 |
2 |
1 |
11 |
1 |
19 |
x1-x2 |
1-x1x2 |
x1-x2 |
1-x1x2 |
x1-x2 |
1-x1x2 |
x-y |
1-xy |
1 |
2 |
1 |
5 |
1 |
3 |
1 |
3 |
1 |
11 |
1 |
4 |
1 |
4 |
1 |
19 |
1 |
5 |
1 |
2 |
1 |
11 |
1 |
19 |
1 |
5 |
1 |
3x+1 |
A.(e-1,1) | B.(0,e-1)∪(1,+∞) | C.(e-1,e) | D.(0,1)∪(e,+∞) |
| ||
|x+2|-2 |
1 |
x |
A.x轴对称 | B.y轴对称 |
C.原点对称 | D.直线y=x对称 |
© 2017-2019 超级试练试题库,All Rights Reserved.