π |
2 |
π |
2 |
A.2 | B.1 | C.0 | D.-1 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
x2+1 |
A.-1 | B.0 | C.1 | D.不确定 |
3x(8-3x) |
8 |
3 |
A.0 | B.
| C.4 | D.16 |
|
A.(-∞,-1)∪(2,+∞) | B.(-∞,-2)∪(1,+∞) | C.(-1,2) | D.(-2,1) |
A.y=x2-x | B.y=lnx | C.y=ex | D.y=sinx |
n | an |
n+1 | an+1 |
1-ax |
1+ax |
1 |
a |
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