lim |
n→∞ |
(1+2+22+…+2n)2 | ||||||
|
A.16 | B.8 | C.4 | D.2 |
lim |
n→∞ |
(1+2+22+…+2n)2 | ||||||
|
lim |
n→∞ |
[
| ||
22n-1 |
lim |
n→∞ |
(2n-1)2 |
22n-1 |
lim |
n→∞ |
22n-2•2n+1 |
22n-1 |
lim |
n→∞ |
n2+1 |
n3 |
n2+2 |
n3 |
n2+n |
n3 |
A.0 | B.1 | C.2 | D.不存在 |
1 |
a1a2 |
1 |
a2a3 |
1 |
an-1•an |
lim |
n→∞ |
lim |
n→∞ |
lim |
n→∞ |
an-3 |
an+2 |
4 |
9 |
lim |
n→∞ |
lim |
n→∞ |
3n-1+(-2)n |
3n+(-2)n+1 |
lim |
n→∞ |
a1+a2+a3+…+an |
a6+a7+a8+…+an |
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