A.最大值4 | B.最小值4 | C.最大值
| D.最小值
|
4y+4 |
3y-1 |
4y2+4y |
3y-1 |
| ||||||
3y-1 |
4 |
9 |
4 |
3y-1 |
20 |
9 |
4 |
9 |
(3y-1)×
|
20 |
9 |
4 |
3y-1 |
8 |
y |
2 |
x |
A.6 | B.12 | C.18 | D.24 |
A.当x>0且x≠1时,lgx+
| ||||||
B.当0<x≤2时,x-
| ||||||
C.当x≥2时,x+
| ||||||
D.当x>0时,
|
A.2 | B.4 | C.8 | D.16 |
a |
x |
b |
y |
A.(
| B.
| C.
| D.a+b |
A.
| B.
| C.
| D.
|
© 2017-2019 超级试练试题库,All Rights Reserved.