A.150 | B.-200 | C.150或-200 | D.400或-50 |
a(1-q10) |
1-q |
a(1-q30) |
1-q |
S30 |
S10 |
1-q30 |
1-q10 |
(1-q10)(1+q10+q20) |
1-q10 |
S40 |
S10 |
| ||
|
1-(q10)4 |
1-q10 |
1-24 |
1-2 |
A.y=ax-b | B.y=bx+a | C.y=bx-a | D.y=ax+b |
S10 |
S5 |
S15 |
S5 |
S5 |
S2 |
A.-11 | B.-8 | C.5 | D.11 |
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