x |
ex |
e(en-1)-n(e-1) |
(e-1)2en |
n |
e |
x |
ex |
ex-xex |
(ex)2 |
1-x |
ex |
n |
en |
1 |
e |
2 |
e2 |
3 |
e3 |
n |
en |
1 |
e |
1 |
e2 |
2 |
e3 |
3 |
e4 |
n-1 |
en |
n |
en+1 |
1 |
e |
1 |
e |
1 |
e2 |
1 |
e3 |
1 |
en |
n |
en+1 |
| ||||
1-
|
n |
an+1 |
e(en-1)-n(e-1) |
en(e-1)2 |
1 |
e |
1 |
e |
1 |
e |
n |
e |
e(en-1)-n(e-1) |
en(e-1)2 |
n |
e |
A.(0,2] | B.(0,2) | C.[
| D.(
|
x |
a2+x2 |
n |
k=1 |
1 |
k2 |
1 |
k3 |
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