a |
b |
c |
d |
1 |
e |
1+a |
b |
c |
d |
1 |
e |
a |
b |
c |
d |
1 |
e |
1 |
b |
a |
b |
c+1 |
d |
1 |
e |
a |
b |
c |
d |
1 |
e |
1 |
d |
1 |
b |
1 |
d |
A.
| B.
| ||||||||||
C.a2+b2+2≥2a+2b | D.a3+b3≥ab2+a2b |
1 |
3 |
1 |
2 |
1 |
2 |
-x |
A.x1<x2<x3 | B.x2<x3<x1 | C.x1<x3<x2 | D.x3<x2<x1 |
A.ab<0 | B.a2<b2 | C.)|a|<|b| | D.
|
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