A.(-2,2] | B.[-2,2] | C.(2,+∞) | D.(-∞,2] |
|
b+3 |
a-2 |
A.(-
| B.(-∞,-
| ||||
C.(-
| D.(-∞,-
|
A.0 | B.-4 | C.-2 | D.2 |
a2 |
x |
b2 |
y |
(a+b)2 |
x+y |
a |
x |
b |
y |
2 |
x |
9 |
1-2x |
1 |
2 |
A.11+6
| B.11+6
| C.5,
| D.25,
|
1 |
x |
A.最大值为0 | B.最小值为0 | C.最大值为-4 | D.最小值为-4 |
A.6 | B.6.5 | C.7 | D.7.5 |
© 2017-2019 超级试练试题库,All Rights Reserved.