1 |
a1a2 |
1 |
a2a3 |
1 |
an-1•an |
lim |
n→∞ |
1 |
anan+1 |
| ||||
d |
1 |
a1 |
1 |
a2 |
1 |
a2 |
1 |
a3 |
1 |
an-1 |
1 |
an |
1 |
d |
1 |
a1 |
1 |
an |
1 |
d |
lim |
n→∞ |
1 |
an |
lim |
n→∞ |
1 |
a1d |
1 |
a1d |
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 |
16 |
9 |
lim |
n→∞ |
an-a-n |
an+a-n |
© 2017-2019 超级试练试题库,All Rights Reserved.