C | 1n |
C | 2n |
C | nn |
C | 0n |
C | 2n |
C | 4n |
C | mn |
n |
2 |
Pn |
Qn |
A.-1<q≤1,且q≠0 | B.-1<q<1,且q≠0 |
C.-3<q≤1,且q≠0 | D.-3<q<1,且q≠0 |
C | 0n |
C | 2n |
C | 4n |
C | mn |
n |
2 |
C | 0n |
C | 2n |
C | 4n |
C | mn |
Pn |
Qn |
1+q |
2 |
1+q |
2 |
1 |
x |
A.10 | B.20 | C.30 | D.120 |
2 |
x2 |
x |
p |
20 |
27 |
A.1 | B.2 | C.3 | D.4 |
1 |
x |
1 | ||
|
3 |
14 |
A.-1 | B.1 | C.-45 | D.45 |
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