在
轴同侧的两个圆:动圆
和圆
外切(
),且动圆
与
轴相切.求
(1)动圆
的圆心轨迹方程
;
(2)若直线
与曲线
有且仅有一个公共点,求
和
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76dd6dbdedf6a4d27fb2e089eb04216b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac612fd748b302602118aa1fa572109d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)动圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bec7d8e3b20050f4fad86e5f7c8be33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
2006高三·浙江·竞赛 查看更多[1]
(已下线)2006年全国高中数学联赛浙江省预赛试题
更新时间:2018-12-22 10:47:43
|
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解答题-问答题
|
适中
(0.65)
【推荐1】设曲线
(a为正常数)与
在x轴上方仅有一个公共点P.
(1)求实数m的取值范围(用a表示);
(2)O为原点,若
与x轴的负半轴交于点A,当
时,试求△OAP的面积的最大值(用a表示).
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e4678f062b60cfe994e4fa8d7c7584a.png)
(1)求实数m的取值范围(用a表示);
(2)O为原点,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f41c6b9fa72109ba69163a5c6b7874a2.png)
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解答题-问答题
|
适中
(0.65)
【推荐2】函数
和
的图像交于两点,通过这两个交点的直线方程为
.求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ccad7f62b91486b73cede37fface7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd190f1397028ca8afceba91dd8a9501.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e136e7637543c8ae92c8dcd55b31924.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9f2416d1f75a45a314331146550832e.png)
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解答题-问答题
|
适中
(0.65)
【推荐2】已知各项均为整数的无穷数列
满足:
、
、
,
,
,
,
,
,
证明:对任何大于1的正整数
,存在无穷多个正整数
,使得
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29518f13a1ebc3fff8181c2d7cfba22f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f3f1dd7a247b85e44db8b2a8c443007.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/213f8295ee5e975f665bb8c129bc3400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd28714fe2d61e67c2676baa66e7f473.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a34945a161fb0585d81f1c02c02b445a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2571966797f0d86b93dfce4c17436074.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/565115ddac86bbb9aa4f6b59869375b0.png)
证明:对任何大于1的正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1fb71bbba75ae0e71e1bff08147b185.png)
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