问题补充:
单选题动点P(x,y)到定点A(3,4)的距离比P到x轴的距离多一个单位长,则动点P的轨迹方程是A.x2-6x-10y+24=0B.x2-6x-6y+24=0C.x2-6x-10y+24=0(y>0)和x2-6x-6y+24=0(y<0D.x2-8x-8y+24=0
答案:
C
时间:2019-01-07 02:22:55
单选题动点P(x,y)到定点A(3,4)的距离比P到x轴的距离多一个单位长,则动点P的轨迹方程是A.x2-6x-10y+24=0B.x2-6x-6y+24=0C.x2-6x-10y+24=0(y>0)和x2-6x-6y+24=0(y<0D.x2-8x-8y+24=0
C
已知平面内一动点P到定点F(2 0)的距离与点P到y轴的距离的差等于2.(Ⅰ)求动点P的
2022-09-23