若抛物线
在点(1,2)处的切线也与圆
相切,则实数
的值为________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8516f71467b419293fa27df70bdaed74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e796e2f29aa6ea8c7d8d30653ea7a07b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2018-03-23 18:40:34
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【推荐1】当
取遍所有值时,直线
所围成图形的面积为_________ .
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【推荐2】已知点
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/527644f53abbcfd2e8457da020cb0262.png)
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【推荐1】已知点
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852b303689c31189cd47bb4a3220f9fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf2681ac1a108631e2c2af86d2a68b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e34e98a35a75a04a5f3434123ff4990.png)
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【推荐2】若圆
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c84c9f96ad057acb8c40980074853336.png)
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