在极坐标系中,曲线
与曲线
相交于
两点,若
,则实数
的值为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1be9d6af2bf62d82ce4c79141c6d850a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9514468ce4ea82166ffd713a4b0743c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb398137779190b35492d9f06d5fbc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cb6573126516181bee81e64513ec1da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2020-05-02 14:52:32
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解题方法
【推荐1】已知半径为5的动圆
的圆心在直线
:
上.存在正实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/258e40e3883271c3580c1d3c805dcac6.png)
___________ ,使得动圆
中满足与圆
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相外切的圆有且仅有一个.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e78ef7ef7cc0ade96f56b4c19bdd3fb.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3503d330608e7138d1b529aba4512fa.png)
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【推荐2】在平面直角坐标系中,直线
与圆
交于
两点.当
的面积最大时,实数
的值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4460bdad3d13ff8e214177461fff4fd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0911c7e219723491b033578b47a71955.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e856c15c61d7cb6ebd8daef542a4e7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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【推荐1】在极坐标系中,点
到圆
的圆心的距离为__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cfa455015282512d36bb4e125a72e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb7d96c2047d774cc6ca7bef7b915a9c.png)
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【推荐2】在极坐标系中,定点
,点
在直线
上运动,当线段
最短时,点
的极坐标为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b849e26e3daf517eee4e028d2f49755b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60e68cb12679672d1f7a5b467f0f86f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
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【推荐1】若直线
与曲线
有交点,则实数
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a94b2716c56f449246c6ff3653ec9bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcfda11f6f6f9ca5a3fec5629c1a3098.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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【推荐2】(极坐标与参数方程选做题)点M,N分别是曲线
上的动点,则|MN|的最小值是_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/898021ead2e77e081aac762769456399.png)
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