两条平行线
分别过点P(-2,-2),Q(1,3),它们之间的距离为d,如果这两条直线各自绕点P,Q旋转并互相保持平行,则d的范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
更新时间:2020-10-01 11:26:25
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【知识点】 将军饮马问题求最值
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【推荐1】已知
,
及
轴上的动点
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(0.85)
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【推荐2】已知圆
,
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,M,N分别是圆
,
上的动点,
为直线
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的最小值为___________ .
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa9dd4d452ba05247ea59caf9ad9fa6.png)
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