1+x |
1-x |
1+x2 |
1-x2 |
1 |
2 |
1+x |
1-x |
t-1 |
t+1 |
1+x2 |
1-x2 |
1+(
| ||
1-(
|
t2+1 |
2t |
1 |
2 |
1 |
t |
1 |
2 |
1 |
t |
1 |
t |
1 |
x |
1 |
x2 |
x2-1 |
x2 |
1 |
2 |
1 |
2 |
5 |
2 |
10 |
3 |
10 |
3 |
10 |
3 |
x2-3x+2 |
x |
x+1 |
a |
a+b+c |
b |
b+c+d |
c |
a+c+d |
d |
d+a+b |
A.0<S<1 | B.1<S<2 | C.2<S<3 | D.3<S<4 |
|
A.{(0,3),(1,2)} | B.{0,1} | C.{3,2} | D.{y丨y≤3} |
A.[
| B.[
| C.[1,
| D.[3,
|
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