π |
2 |
A.f(sin A)>f(cos B) | B.f(sin A)>f(sin B) |
C.f(cos A)>f(cos B) | D.f(sin A)<f(cos B) |
π |
2 |
π |
2 |
π |
2 |
π |
2 |
π |
2 |
1 |
16 |
2x+1 |
A.1 | B.2 | C.3 | D.4 |
1-x2 |
1 |
2 |
|A|+|B| |
2 |
lg|A|+lg|B| |
2 |
A.①②④ | B.③④ | C.②③ | D.①④ |
n(n-2) |
2 |
A.“若x=0,则xy=0”的逆命题 |
B.“若x=0,则xy=0”的否命题 |
C.“若x>1,则x>2”的逆否命题 |
D.“若x=2,则(x-2)(x-1)=0” |
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