lim |
n→∞ |
1 |
a2-a1 |
1 |
a3-a2 |
1 |
an+1-an |
A.2 | B.
| C.1 | D.
|
an-1 |
an-1-1 |
an-1 |
an-1-1 |
lim |
n→∞ |
1 |
a2-a1 |
1 |
a3-a2 |
1 |
an+1-an |
lim |
n→∞ |
1 |
2 |
1 |
4 |
1 |
2n-1 |
1 |
2 |
1 |
3 |
1 |
n |
1 |
2 |
nan-1 |
n+an-1 |
2b |
2+b[log2n] |
A.0 | B.-
| C.0或-
| D.0或1 |
π |
6 |
π |
6 |
| ||
2 |
A.3x+2y+
| B.3x-2y+
| ||||||||
C.3x-2y-
| D.3x+2y-
|
8 |
3 |
alnx |
x+1 |
b |
x |
lnx |
x-1 |
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