lim |
n→∞ |
An |
n |
a(1-rn) |
1-r |
1 |
-1+r |
1 |
-1+r |
ar(1-rn) |
1-r |
a |
(-1+r)2 |
n(n-1) |
2 |
An |
n |
1 |
n |
n(n-1) |
2 |
a |
(-1+r)2 |
n-1 |
2 |
a |
(-1+r)2 |
an |
1-r |
lim |
n→∞ |
An |
n |
d |
2 |
a |
r-1 |
a |
(1-r)2 |
d |
2 |
a |
(1-r)2 |
d |
2 |
a |
(1-r)2 |
a |
r-1 |
1 |
2 |
1 |
3 |
1 |
2 |
b-2 |
a-1 |
1 |
x |
1 |
2 |
lim |
x→-∞ |
x2+1 |
x2-1 |
lim |
n→∞ |
an |
Sn |
A.0 | B.
| C.1 | D.2 |
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