(x-1)2+(y+2)2 |
A.圆 | B.椭圆 | C.双曲线 | D.抛物线 |
(x-1)2+(y+2)2 |
5 |
|x+2y-3| | ||
|
5 |
(x-1)2+(y+2)2 |
| ||||
|
| ||
5 |
| ||
5 |
x2 |
5 |
y2 |
4 |
x2 |
16 |
y2 |
25 |
A.16 | B.8 | C.10 | D.20 |
(x-1)2+y2 |
A.6 | B.4 |
C.2 | D.与x,y取值有关 |
1 |
2 |
x2 |
|m|-1 |
y2 |
2-m |
A.m<2 | B.1<m<2 | ||
C.m<-1或1<m<2 | D.m<-1或1<m<
|
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