曲线与x2-y2-x+y-1=0关于直线x-y=0成轴对称的曲线方程是()
A.x2-y2-x+y+1=0 B.x2-y2+x-y+1=0 C.x2-y2+x一y-1=0 D.x2-y2+x+y-1=0正确答案A
曲线与x2-y2-x+y-1=0关于直线x-y=0成轴对称的曲线方程是()
A.x2-y2-x+y+1=0 B.x2-y2+x-y+1=0 C.x2-y2+x一y-1=0 D.x2-y2+x+y-1=0正确答案A
