x+b |
ax2+1 |
mx |
1+x |
x |
ax2+1 |
|
|
|
x |
x2+1 |
mx |
x+1 |
|
1 |
2m |
-1-
| ||
2 |
-1-
| ||
2 |
lg
|
x2+1 |
x |
A.[2,+∞) | B.(-∞,-2] | C.(-∞,-2]∪[2,+∞) | D.[-2,2] |
ab |
A.[1,+∞) | B.(-1,+∞) | C.(-∞,1) | D.(1,+∞) |
|
A.奇函数,值域(0,1] | B.偶函数,值域(0,1] |
C.非奇非偶函数,值域(0,1] | D.偶函数,值域(0,+∞) |
1 | ||
|
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