1 |
18 |
12 |
a |
2 |
a |
A.(0,
| B.(0,
| C.[
| D.[
|
1 |
18 |
12 |
a |
2 |
a |
1 |
6 |
12 |
a |
2 |
a |
1 |
18 |
12 |
a |
2 |
a |
1 |
18 |
12 |
a |
2 |
a |
2 |
a |
k 1-k 2 |
1+k 1k 2 |
1 |
4 |
12 |
a |
3 |
π |
3 |
π |
2 |
A.相切 | B.相交且过圆心 |
C.相交但不过圆心 | D.相离 |
1 |
x |
lim |
n→∞ |
an-2bn |
3an+4bn |
A.
| B.
| C.1 | D.-
|
π |
2 |
33 |
4 |
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