3 |
3 |
3 |
3 |
3 |
4-d2 |
|0-0-k+2| | ||
|
3 |
4 |
3 |
4 |
3 |
4 |
2a |
A.相交 | B.相切 | C.相离 | D.不能确定 |
A.2x+3y=4 | B.x=2 |
C.5x-12y+26=0 | D.5x-12y+26=0x=2 |
A.x2+y2+2x+2y+1=0 | B.x2+y2-2x+2y+1=0 |
C.x2+y2-2x-2y+1=0 | D.x2+y2-2x-2y-1=0 |
1 |
2 |
6+
| ||
2 |
6 |
A.3 | B.5 | C.7 | D.9 |
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