2x |
1 |
1-x |
A.a | B.b | C.c | D.不能确定 |
x |
4x |
2x |
1 |
1-x |
1 |
1-x |
1-x2-1 |
1-x |
x2 |
1-x |
1 |
1-x |
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 |
f(x) |
x |
A.a>ab>ab2 | B.ab2>ab>a | C.ab>a>ab2 | D.ab>ab2>a |
1 |
a |
1 |
a |
1 |
b |
A.1个 | B.2个 | C.3个 | D.4个 |
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