x |
lim |
n→∞ |
32 |
a2 |
33 |
a3 |
3n |
an |
C | rn |
r |
2 |
r |
2 |
3n |
an |
3n | ||
|
2 |
n(n-1) |
18 |
n(n-1) |
1 |
n-1 |
1 |
n |
lim |
n→∞ |
32 |
a2 |
33 |
a3 |
34 |
a4 |
3n |
an |
lim |
n→∞ |
1 |
2 |
1 |
2 |
1 |
3 |
1 |
3 |
1 |
4 |
1 |
n-1 |
1 |
n |
lim |
n→∞ |
1 |
n |
lim |
△x→0 |
f(x0)-f(x0-2△x) |
△x |
1 |
x |
1 |
2 |
1 |
n |
1 |
n2 |
1 |
n3 |
1 |
2 |
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