k(1-x) |
x-2 |
(1-k)x+k-2 |
x-2 |
2-k |
1-k |
2-k |
1-k |
2-k |
1-k |
2-k |
1-k |
2-k |
1-k |
2-k |
1-k |
| ||
2 |
3 |
A.1 | B.2 | C.3 | D.4 |
A.a=16或a=0 | B.a=4或a=0 | C.a=2或a=0 | D.a=2或a=4 |
a |
|a| |
b |
|b| |
ab |
|ab| |
A.{3} | B.{3,2,1} | C.{3,1,-1} | D.{3,-1} |
A.3.14∈Q | B.2∈Z | C.
| D.π∈Q |
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