名校
解题方法
1 . 已知
,
分别为椭圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/470cde3e5244dfbbb08078d8e5717ccb.png)
的左、右焦点,椭圆上任意一点
到焦点距离的最小值与最大值之比为
,过
且垂直于长轴的椭圆
的弦长为
.
(1)求椭圆
的标准方程;
(2)过
的直线与椭圆
相交的交点
、
与右焦点
所围成的三角形的内切圆面积是否存在最大值?若存在,试求出最大值;若不存在,说明理由.
![](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/470cde3e5244dfbbb08078d8e5717ccb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04239f37cf5218093585663ccb5688eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](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/a3fb78c5f885034612c0e030b920143d.png)
您最近一年使用:0次
2021-09-12更新
|
1575次组卷
|
14卷引用:河北省廊坊市第一中学2021-2022学年高一上学期12月考试数学试题
河北省廊坊市第一中学2021-2022学年高一上学期12月考试数学试题河南省顶级名校2021-2022学年高三上学期9月开学联考数学(理)试题湘豫名校联考2022届高三上学期8月数学文科试题河南省顶级名校2021-2022学年高三上学期9月开学联考数学(文)试题四川省成都市树德中学2021-2022学年高三上学期10月阶段性测试数学(文)试题四川省成都市树德中学2021-2022学年高三上学期10月阶段性测试数学(理)试题吉林省白城市第一中学2021-2022学年高二上学期期中数学试题山西省稷山中学2021-2022学年高二上学期第二次月考数学试题福建省福州屏东中学2021-2022学年高二上学期期中考试数学试题(已下线)3.1.1椭圆及其标准方程(备作业)-【上好课】2021-2022学年高二数学同步备课系列(人教A版2019选择性必修第一册)(已下线)一轮复习大题专练56—椭圆(面积最值问题1)—2022届高三数学一轮复习(已下线)专题31 圆锥曲线存在性问题的五种类型大题100题-【千题百练】2022年新高考数学高频考点+题型专项千题百练(新高考适用)江苏省南通市如东高级中学2022-2023学年高三上学期12月阶段测试数学试题河北省2023届高三模拟数学试题
2 . 如图,
,
为椭圆E:
的左、右焦点.点Q满足:延长
,
.分别交椭圆E于M,N两点,且
的重心P在椭圆E上.直线
交
于点S.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/4ad75bbd-4f22-4427-a436-03f5c9190dd6.png?resizew=183)
(1)若
,
是椭圆长轴的两个端点,求直线
,
的斜率之积:
(2)设
,
的面积分别为
,
,求
的最小值.
![](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/6cae00bdc6f8b564b6b15b32572c848b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c30a7506331e47342fb1e7d2e12d041.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a16c755ab3fea6ca99b13193a5d7e485.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0023c9e8e0fec24d3aa77d09b2e4e62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da01a3abe1c9dc4e6283afa0dc1a0d39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce2790947716b1cfa9c5e7a65db4093.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/4ad75bbd-4f22-4427-a436-03f5c9190dd6.png?resizew=183)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/800c5e266b4ad8462a46970f0a232d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f46b053f98b1d05a2043e94eeaefea87.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41b9e20825178609828007f6dffb4513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05ef0db274f17e126fbd99ab02c0b87e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235f0a6fb218d28383e6f27f2df1f50f.png)
您最近一年使用:0次
名校
解题方法
3 . 椭圆
的离心率为
,焦距为
.
(1)求椭圆
的标准方程;
(2)设
是椭圆
上的动点,过原点
作圆
的两条斜率存在的切线分别与椭圆
交于点
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a200ca2c4af794f4d1c6a5443830b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1174142f3bba761585b6bc2653009b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/599f8c29e41a6f12a56ce3832b3cc617.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b513d3bd28743002358c0e0f96c8b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8a99d2c4a23825f62aadcc40822b5eb.png)
您最近一年使用:0次
2021-01-29更新
|
1074次组卷
|
5卷引用:【新东方】高中数学20210304-007
(已下线)【新东方】高中数学20210304-007浙江省杭州市七县市2020-2021学年高二上学期期末数学试题(已下线)【新东方】高中数学20210429—005【2020】【高二上】浙江省台州市路桥中学2020-2021学年高二下学期返校考数学试题(已下线)专题35 双切线问题的探究-2
20-21高一·浙江·期末
解题方法
4 . 已知椭圆
,其长轴为4,短轴为2.
(1)求椭圆C的方程及离心率.
(2)直线l经过定点(1,0),且与椭圆C交于
两点,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
(1)求椭圆C的方程及离心率.
(2)直线l经过定点(1,0),且与椭圆C交于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
您最近一年使用:0次
5 . 已知点
是抛物线
的准线上任意一点,过点
作抛物线
的两条切线
、
,其中
、
为切点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/21/ca05a90d-c00d-4e55-9e4c-798269791a14.png?resizew=231)
(1)证明:直线
过定点,并求出定点的坐标;
(2)若直线
交椭圆
于
、
两点,
、
分别是
、
的面积,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac8a3bffe545af2299cf999d44767206.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/21/ca05a90d-c00d-4e55-9e4c-798269791a14.png?resizew=231)
(1)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d323869f1ee79f8d629fe70d72c538fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177678001b2ccde1db8f57fa5e017002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235f0a6fb218d28383e6f27f2df1f50f.png)
您最近一年使用:0次
2020-07-26更新
|
3210次组卷
|
15卷引用:【新东方】【2021.4.27】【宁波】【高一上】【高中数学】【00118】
(已下线)【新东方】【2021.4.27】【宁波】【高一上】【高中数学】【00118】(已下线)重难点5 解析几何-2021年高考数学【热点·重点·难点】专练(山东专用)(已下线)黄金卷15-【赢在高考·黄金20卷】备战2021高考数学全真模拟卷(新高考专用)(已下线)【新东方】【2021.5.25】【NB】【高二上】【高中数学】【NB00086】重庆市第一中2021届高三高考数学押题卷试题(四)江苏省南京市第二十九中学2020-2021学年高二上学期期末数学试题浙江省杭州市第二中学2020届高三下学期考前热身考试(最后一卷)数学试题江苏省南通市2020-2021学年高三上学期期初调研数学试题江苏省南通如皋、盐城射阳2020-2021学年高三上学期期初联考数学试题江苏省南通市2020-2021学年高三上学期9月开学考试数学试题江苏省南京市2020-2021学年高二上学期期中模拟数学试题陕西省西安市长安区第一中学2022届高三下学期第五次教学质量检测理科数学试题(已下线)专题35 双切线问题的探究-2江苏省镇江市扬中市第二高级中学2022-2023学年高三上学期期末考前热身数学试题广东省揭阳市普宁国贤学校2023届高三下学期3月连考3数学试题
6 . 在圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f94c7b530a908f1792fbd1e9e7c505a.png)
上任取一点
,过点
作
轴的垂线段
,
为垂足.当点
在圆上运动时,线段
的中点
形成轨迹
.
(1)求轨迹
的方程;
(2)若直线
与曲线
交于
两点,
为曲线
上一动点,求
面积的最大值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f94c7b530a908f1792fbd1e9e7c505a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求轨迹
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b17f20c25bb16153b5f2d25062ed7a7.png)
您最近一年使用:0次
2016-12-01更新
|
1721次组卷
|
8卷引用:4.2.3 直线与圆的方程的应用-2020-2021学年高一数学课时同步练(人教A版必修2)
(已下线)4.2.3 直线与圆的方程的应用-2020-2021学年高一数学课时同步练(人教A版必修2)(已下线)3.1.2 椭圆的简单几何性质(课堂培优)-2021-2022学年高二数学课后培优练(苏教版2019选择性必修第一册)(已下线)2011-2012学年浙江省余姚中学高二上学期期中理科数学试卷江西省南昌市八一中学、洪都中学等六校2019-2020学年高二上学期期末联考数学(理)试题江西省南昌市八一中学、洪都中学等六校2019-2020学年高二上学期期末联考数学(文)试题四川省泸县第一中学2019-2020学年高二下学期第二次月考数学(文)试题四川省泸县第一中学2019-2020学年高二下学期第二次月考数学(理)试题四川省宜宾市叙州区第一中学校2019-2020学年高二下学期第四学月考试数学(理)试题