A.(x-6)2+(y-5)2=10 | B.(x-6)2+(y+5)2=10 |
C.(x-5)2+(y-6)2=10 | D.(x-5)2+(y+6)2=10 |
(6-3)2+(5-6)2 |
10 |
10 |
A.(2,-1),3 | B.(-2,1),3 | C.(-2,-1),3 | D.(2,-1),9 |
A.(x-1)2+(y+1)2=2 | B.(x+1)2+(y-1)2=4 |
C.(x+1)2+(y-1)2=2 | D.(x-1)2+(y+1)2=4 |
A.(1,-2),5 | B.(1,-2),
| C.(-1,2),5 | D.(-1,2),
|
A.D=E | B.D=F | C.E=F | D.D=E=F |
A.y=3x2或y=-3x2 | B.y=3x2 |
C.y2=-9x或y=3x2 | D.y=-3x2或y2=9x |
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