π |
2 |
π |
2 |
π |
2 |
π |
2 |
A.(-π,0) | B.(-π,π) | C.(-
| D.(-
|
π |
2 |
π |
2 |
π |
2 |
π |
2 |
3π |
2 |
3π |
2 |
1 |
1-a |
A.a-d>b-c | B.ac>bd | C.
| D.a-c>b-d |
1 |
a |
1 |
b |
1 |
2 |
1 |
2 |
b |
a |
a |
b |
2x |
1 |
1-x |
A.a | B.b | C.c | D.不能确定 |
A.若x2>x,则x>0 | B.若x>0,则x2>x |
C.若x<0,则x2>x | D.若x2>x,则x<0 |
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