lim |
n→+∞ |
Sn |
nan |
Bn |
bn |
n(n-1) |
2 |
b1(1-qn) |
1-q |
lim |
n→+∞ |
Sn |
nan |
Bn |
bn |
lim |
n→+∞ |
na1+
| ||
n [a1+(n-1)d] |
| ||
b1qn-1 |
lim |
n→+∞ |
| ||||||
|
1-qn |
(1-q)qn-1 |
1 |
2 |
q |
q-1 |
1 |
2 |
q |
q-1 |
| ||
2 |
21 |
4 |
lim |
n→∞ |
A.30° | B.45° | C.60° | D.120° |
lim |
n→∞ |
2n2 |
n+1 |
7 |
4 |
A.
| B.
| C.
| D.2 |
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