如图,在
中,三个顶点坐标分别为
,
,
,曲线
过
点且曲线
上任一点
满足
是定值.
![](https://img.xkw.com/dksih/QBM/2012/2/16/1570743170301952/1570743175929856/STEM/d444c4f62a124ab6ac78ce2868fc7ef8.png?resizew=185)
(Ⅰ)求出曲线
的标准方程;
(Ⅱ)设曲线
与
轴,
轴的交点分别为
、
,是否存在斜率为
的直线
过定点
与曲线
交于不同的两点
、
,且向量
与
共线.若存在,求出此直线方程;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aca61fa49729a1a730a68f7ce2c31d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65c09b7a163e7bf1ee295d7297286afa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a54417a9e9b5242841bebe000870cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ce0fb12878e6d715f15473f98fafccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c59076e80b15755ef630fd5f40d1f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f015ed8e497b4394053ddd19683a98f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c59076e80b15755ef630fd5f40d1f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60051144e33707f6aa51b2fe09925268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a677db2e68cbe074f398afa191d6beb2.png)
![](https://img.xkw.com/dksih/QBM/2012/2/16/1570743170301952/1570743175929856/STEM/d444c4f62a124ab6ac78ce2868fc7ef8.png?resizew=185)
(Ⅰ)求出曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c59076e80b15755ef630fd5f40d1f7.png)
(Ⅱ)设曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c59076e80b15755ef630fd5f40d1f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed9af8c3fbdb748fd11e2423de063616.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2db885ad7da56625153d3bceafdb507.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7909220d1db380634534190b662ee0a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c123204222ccd33946d5613378624d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b61ed9fd6fbfbea7a406c80a7b92df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9957f52a4f4a424e522d0afb0bbcdabb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e00bcea615e6da5ef2d921fc96948c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c59076e80b15755ef630fd5f40d1f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8f1796428c2600bbbdff746b0311583.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8346ced59eb87a592fca47a82a146912.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76bc425d6f49ce410a9616ddfe379e58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/553daf1657cb8ee202e3aa877dc9441d.png)
12-13高三上·海南省直辖县级单位·期末 查看更多[1]
(已下线)2012届海南省琼海市嘉积中学高三第一学期期末理科数学试卷
更新时间:2016-12-01 15:08:05
|
相似题推荐
解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐1】设
,
两点的坐标分别为
,
.直线
,
相交于点
,且它们的斜率之积是
,记动点
的轨迹为
.
(1)求
的方程;
(2)设以
为中点的弦所在直线为
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae2ed63ddcc7c1327698a57d5b2f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ad6fa1561db359b477f4038feea9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3389f53711264b0acba3ba6019f8b908.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fafc00b0c4c36558aae07adfd485461f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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【推荐2】在
中,
的对边分别为
(其中
为定值),以
所在直线为
轴,
的垂直平分线为
轴建立直角坐标系(如图),请你给出适当的条件,求出顶点
的轨迹方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b23beb7fa35ed321584f95c7507b8b78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f5573b30734d65648f61c0a94c98de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/9/95a4cb9c-ae1b-4ab2-97cd-3da35b044d71.png?resizew=165)
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解答题-问答题
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解题方法
【推荐1】已知椭圆
与
轴,
轴的正半轴分别交于A,B两点,原点O到直线AB的距离为
该椭圆的离心率为
.
(1)求椭圆的方程
(2)是否存在过点P
的直线
与椭圆交于M,N两个不同的点,使
成立?若存在,求出
的方程;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ea6e972ea53db1c69eb100623f22a53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
(1)求椭圆的方程
(2)是否存在过点P
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f5ffdaf0ff52182270424727e23354.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cc388f35a38f18916f3e09e285fc70f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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【推荐2】在直角坐标平面内,已知点A(1,0),B(﹣1,0),动点P满足|PA|+|PB|=4.
(Ⅰ)求动点P的轨迹C的方程;
(Ⅱ)过点(
,0)作直线
与轨迹C交于E、F两点,线段EF的中点为M,轨迹C与x轴正半轴的交点为N,求直线MN的斜率k的取值范围.
(Ⅰ)求动点P的轨迹C的方程;
(Ⅱ)过点(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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