题目内容
已知圆C与圆(x-1)2+y2=1关于直线y=-x对称,则圆C的方程为( )
A.(x+1)2+y2=1 B.x2+y2=1
C.x2+(y+1)2=1 D.x2+(y-1)2=1
C
A.(x-1)2+y2=1 B.x2+y2=1
C.x2+(y+1)2=1 D.x2+(y-1)2=1
A.(x+1)2+y2=1
B.x2+y2=1
C.x2+(y+1)2=1
D.x2+(y-1)2=1
已知圆C与圆(x-1)2+y2=1关于直线y=-x对称,则圆C的方程( )
A.(x+1)2+y2=1 B.x2+y2=1
C.x2+(y+1)2=1 D.x2+(y-1)2=1