a |
c2 |
b |
c2 |
1 |
a |
1 |
b |
1 |
a |
1 |
b |
1 |
1-a |
A.1 | B.2 | C.3 | D.4 |
a |
c2 |
b |
c2 |
a |
c2 |
b |
c2 |
a |
ab |
b |
ab |
1 |
b |
1 |
a |
1 |
-3 |
1 |
-2 |
1 |
1-a |
lg(1+a)lgb+lg(1-a)lga |
lgalgb |
lg(1+a)lga+lg(1-a)lga |
lgalgb |
lg(1-a2) |
lgb |
1 |
1-a |
A.M≥N | B.M≤N | C.M=N | D.不能确定 |
x |
y |
x+y |
A.a≥b | B.a≤b | C.a>b | D.a<b |
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