已知圆
与抛物线
(
)的准线相切,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30093078a92ef2c2d79ab24d82b7b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a68dcb8473884cd9dd05bc91733a38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abd313d4e92a762fb7fb0c1cb65263d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
更新时间:2020-12-20 22:54:46
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填空题-单空题
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较易
(0.85)
解题方法
【推荐1】双曲线
:
的焦距是4,其渐近线与圆
:
相切,则双曲线
的方程为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3040b6c904477030ecf8ba20b2b18759.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aed65024898bb517e8cd6a2c663b836e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
您最近一年使用:0次
【推荐2】若直线
将圆
的周长分为2∶1两部分,则直线
的斜率为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aaf9dcae55441400f6766e26484c559.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23a7ed5c482acf4e9de6ac2ed668abe3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
名校
【推荐1】抛物线
的焦点F到其准线l的距离是________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6141624706a77263331996127697161a.png)
您最近一年使用:0次