圆 (x+1)2+(y-4)2 =1关于直线y=x对称的圆是
A.(x-1)2+(y+4)2 =1 | B.(x-4)2+(y+1)2 ="1" |
C.(x+4)2+(y-1)2 =1 | D.(x-1)2+(y-4)2 =1 |
推荐套卷
圆 (x+1)2+(y-4)2 =1关于直线y=x对称的圆是
A.(x-1)2+(y+4)2 =1 | B.(x-4)2+(y+1)2 ="1" |
C.(x+4)2+(y-1)2 =1 | D.(x-1)2+(y-4)2 =1 |