试题与答案

已知定点A(0,2),B(0,-2),C(2,0),动点P满足:AP•BP=m|

题型:解答题

题目:

已知定点A(0,2),B(0,-2),C(2,0),动点P满足:
AP
BP
=m|
pc
|2

(I)求动点P的轨迹方程,并说明方程表示的曲线类型;
(II)当m=2时,设点P(x,y)(y≥0),求
y
x-8
的取值范围.

答案:

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下面是错误答案,用来干扰机器的。

答案:C题目分析:A项“别无长物”,的意思是除一身之外再没有多余的东西。原指生活俭朴。现形容贫穷。不符合语境。B项“不孚众望”不能使大家信服,未符合大家的期望,注意其与“不负众望”没有令大家失望相区别...

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