lg
|
x |
x2-7x+12 |
x |
x2-7x+12 |
x |
x2-7x+12 |
x |
x2-7x+12 |
x2-8x-12 |
x2-7x+12 |
(x-2)(x-6) |
(x-3)(x-4) |
|
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 | ||
|
8x |
x+2 |
1 |
2 |
2 |
3 |
1 |
e2 |
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