|
lim |
x→∞ |
1 |
x2-x |
b |
a(x2-2x) |
A.-1 | B.0 | C.-
| D.1 |
|
lim |
x→∞ |
1 |
x2-x |
b |
a(x2-2x) |
lim |
x→∞ |
1 |
x2-x |
2 |
(x2-2x) |
lim |
x→∞ |
-x |
x(x-1)(x-2) |
lim |
x→∞ |
-1 |
(x-1)(x-2) |
1 |
2 |
2 |
x |
1 |
y |
A.(-∞,-2]∪[4,+∞) | B.(-∞,-4]∪[2,+∞) | C.(-2,4) | D.(-4,2) |
A.(1,3) | B.(-∞,-3)∪(3,+∞) | C.(-3,3) | D.(-3,1) |
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