已知椭圆
的离心率
,点
在椭圆C上.A,B分别为椭圆C的上下顶点,动直线l交椭圆C于P,Q两点,满足AP⊥AQ,AH⊥PQ,垂足为H.
(1)求椭圆C的标准方程;
(2)求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2fc66af1e6967e988c9670ca8ceeee.png)
(1)求椭圆C的标准方程;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/370abdf35cb8817d35b78eea892731ce.png)
更新时间:2022-10-10 14:46:36
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【推荐1】已知椭圆E:
(
)经过点(
,
),且焦距为
.
(1)求椭圆E的方程;
(2)P为椭圆C上一点,F1,F2分别为椭圆E的左、右焦点,射线PF1,PF2分别交椭圆C于点A,B,试问
是否为定值?若是,求出该定值;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
(1)求椭圆E的方程;
(2)P为椭圆C上一点,F1,F2分别为椭圆E的左、右焦点,射线PF1,PF2分别交椭圆C于点A,B,试问
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e5a29b7ed0c415987dfc800850231a2.png)
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【推荐2】已知椭圆
的左,右焦点分别为
,
,焦距为
,点
在
上.
(1)
是
上一动点,求
的范围;
(2)过
的右焦点
,且斜率不为零的直线
交
于
,
两点,求
的面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5a20dc43538548ac95367b0a5695fcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34005d3b709a89e3db6bb786bbfb2369.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76ea1c3fe8431260ecb8dffcdae8d570.png)
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【推荐1】在直角坐标系
中,曲线C的参数方程为
(
为参数),以坐标原点为极点,x轴正半轴为极轴建立极坐标系,已知直线l的极坐标方程为
.
(1)写出曲线C与直线l的直角坐标方程;
(2)若直线l交曲线C于不同两点
,点O是坐标原点,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b3c50ac04122012ac6634eb9f7be08e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d468200801299bda5862e7174afab53.png)
(1)写出曲线C与直线l的直角坐标方程;
(2)若直线l交曲线C于不同两点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
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【推荐2】已知椭圆
的左,右焦点分别为
,上顶点为A,
是斜边长为
的等腰直角三角形.
(1)求椭圆C的标准方程;
(2)若直线
与椭圆C交于不同两点P,Q,
(i)求m的取值范围;
(ii)求线段PQ长度的最大值;
(iii)直接写出线段PQ中点的轨迹图形名称;
(iv)是否存在m,使得
?若存在,求出m的值:若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2cfd997d3b66a3b8f7731b26f0ab0c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
(1)求椭圆C的标准方程;
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d00a5df9d281dd4e1e45bf6a4d6fb27.png)
(i)求m的取值范围;
(ii)求线段PQ长度的最大值;
(iii)直接写出线段PQ中点的轨迹图形名称;
(iv)是否存在m,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3a63bdb01bc2046e28621b5fa6295c4.png)
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