1 |
3 |
A.[-
| B.[-
| ||||||||||||||||
C.(-∞,-
| D.(-∞,-
|
1 |
3 |
2 |
3 |
2 |
3 |
2 |
3 |
2 |
3 |
2 |
3 |
4 |
3 |
2
| ||
3 |
2
| ||
3 |
A.y=log2x | B.y=
| C.y=|x| | D.y=x-3 |
A.f(a2)<f(a2+1) | B.f(a2)≥f(a2+1) | C.f(a2)>f(a2+1) | D.f(a2)≤f(a2+1) |
x2 |
1+x2 |
1 |
2 |
1 |
x |
1 |
x |
1 |
2 |
1 |
3 |
1 |
10 |
1 |
f(x) |
1 |
x |
A.关于原点对称 | B.关于y轴对称 |
C.关于y=x对称 | D.关于y=-x对称 |
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