1 |
3 |
1 |
m |
3 |
1-3m |
3 |
1-3m |
1 | ||
|
1 |
3 |
1 |
m |
3 |
1-3m |
1 |
m |
1 |
n |
1 |
3 |
1 |
m |
1 |
n |
1 |
m |
1 |
n |
n |
m |
m |
n |
1 |
3 |
n |
m |
m |
n |
|
1 |
m |
1 |
n |
n |
m |
m |
n |
1 |
6 |
1 |
m |
3 |
1-3m |
1 |
m |
1 |
n |
1 |
m |
3 |
1-3m |
A.-2≤t≤2 | B.-
| ||||
C.t≤-2或t=0或t≥2 | D.t≤-
|
1 |
1-x |
1+x |
1-x |
3 |
2 |
3 |
A.2+
| B.2-
| C.
| D.-2-
|
x |
x+1 |
x+1 |
x+2 |
x+2 |
x+3 |
x+3 |
x+4 |
5 |
2 |
2 |
5 |
2 |
2 |
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