圆x2+y2+2kx+k2-1=0与圆x2+y2+2(k+1)y+k2+2k=0的圆心之间的最短距离是( )...
问题详情:圆x2+y2+2kx+k2-1=0与圆x2+y2+2(k+1)y+k2+2k=0的圆心之间的最短距离是( )(A) (B) (C)1 (D)【回答】A知识点:圆与方程题型:选择题...
问题详情:圆x2+y2+2kx+k2-1=0与圆x2+y2+2(k+1)y+k2+2k=0的圆心之间的最短距离是( )(A) (B) (C)1 (D)【回答】A知识点:圆与方程题型:选择题...