名校
解题方法
1 . 已知椭圆
的短轴长为
,且点
在椭圆上.
(1)求椭圆C的标准方程;
(2)椭圆C的左、右顶点分别为A、B,点P、Q是椭圆C上异于A、B的不同两点,直线BP的斜率为
,直线AQ的斜率为
,求证:直线PQ过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9ce4ca242277f5a197b70a6431c24bb.png)
(1)求椭圆C的标准方程;
(2)椭圆C的左、右顶点分别为A、B,点P、Q是椭圆C上异于A、B的不同两点,直线BP的斜率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bcb166b53a49e393871bcb14a528792.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5631bc01b998a4b3fabd9e131699dc.png)
您最近一年使用:0次
2021-01-17更新
|
452次组卷
|
4卷引用:广西崇左高级中学2020-2021学年高二上学期期末模拟数学(理)试题
解题方法
2 . 已知函数
.
(1)若
在
上恒成立,求实数a的取值范围.
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/082ece762ffbf92921f4685d45f5166d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/babc2bdb59e9ae1821bd48e7395474d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8938db94f49dcbe0c383fba0241bb0da.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6329c5bc877a763aad54011ad2c8308c.png)
您最近一年使用:0次
2021-05-06更新
|
219次组卷
|
3卷引用:广西2021届高三4月模拟数学(理)测试试题
解题方法
3 . 已知a>0,函数
.
(1)若f(x)为减函数,求实数a的取值范围;
(2)当x>1时,求证:
.(e=2.718…)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54648bc725c96f7344549d79161bd154.png)
(1)若f(x)为减函数,求实数a的取值范围;
(2)当x>1时,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4720f9f8840de5108a124e817b85de2.png)
您最近一年使用:0次
2020-11-22更新
|
1388次组卷
|
2卷引用:广西梧州市2021届高三3月联考数学(理)试题
4 . 已知
的长轴长为4,短轴长为2.
(1)求椭圆C的标准方程;
(2)点A,B分别为椭圆C的左、右顶点,点P为椭圆C上的动点(异于A,B两点),过原点O作直线PB的垂线,垂足为H,直线OH与直线AP相交于点M,证明:点M的横坐标为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
(1)求椭圆C的标准方程;
(2)点A,B分别为椭圆C的左、右顶点,点P为椭圆C上的动点(异于A,B两点),过原点O作直线PB的垂线,垂足为H,直线OH与直线AP相交于点M,证明:点M的横坐标为定值.
您最近一年使用:0次
2021-01-27更新
|
866次组卷
|
5卷引用:广西河池市2020-2021学年高二上学期期末数学(文)试题
名校
解题方法
5 . 已知函数
.
(1)若
在
单调递增,求实数
的取值范围;
(2)若
,且
只有一个极值点
,求实数
的取值范围,并证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5d827f87e10a7848797480161dcf3cc.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/584e37feaa2a85631283fafe5b1afa9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6ad9bb3493f786ebaa4fd3890c5f3f9.png)
您最近一年使用:0次
2021-02-16更新
|
913次组卷
|
2卷引用:广西桂林市2020-2021学年高二下学期期末数学(理)试题
解题方法
6 . 如图,已知焦点在
轴上的椭圆
的长轴长为
,离心率为
.
![](https://img.xkw.com/dksih/QBM/2020/11/3/2585231855124480/2585659053727744/STEM/9114910883984301b89e29083fb959f8.png?resizew=302)
(1)求椭圆
的方程;
(2)设
为原点,椭圆
的左、右两个顶点分别为
、
,点
椭圆上与
、
不重合的任意一点,点
和点
关于
轴对称,直线
与直线
交于点
,求证:
,
两点的横坐标之积为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://img.xkw.com/dksih/QBM/2020/11/3/2585231855124480/2585659053727744/STEM/9114910883984301b89e29083fb959f8.png?resizew=302)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/dad2a36927223bd70f426ba06aea4b45.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
2020-11-04更新
|
1095次组卷
|
3卷引用:广西钦州市、崇左市2021届高三上学期第一次教学质量检测数学(理)试题
7 . 设函数
(
,
,
).
(1)设
,
,
,证明:
在区间
内存在唯一的零点;
(2)设
,若任意
,
,都有
,求
的取值范围;
(3)在(1)条件下,设
是
在
上的零点,判断数列
,
,…,
,…的增减性.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e8fc5c19f1cda6ae26011292a02d6cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209559aca6bf32705588b6a40e0b7320.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33f306d2b261f4c39a9fc0858d96e647.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/239ea0e903fbb4c8ce04133b9969578c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e89220eb96a4757f2988362bc04e80c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba2e3dd29d24da73d27492ac36198889.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc2d3df37e73a8abea815f37dbb3fff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a49684ba67f71171321586f1a77ad4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/608f663c358464a380cb503e362c2a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(3)在(1)条件下,设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3282e5fde4ae53fcb1bb072a685304c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e89220eb96a4757f2988362bc04e80c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba2e3dd29d24da73d27492ac36198889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3282e5fde4ae53fcb1bb072a685304c9.png)
您最近一年使用:0次
解题方法
8 . 设
为曲线
上两点,
与
的横坐标之和为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c9ab51e0bae2c3b0f6c556ea9cdf7ad.png)
(1)若
与
的纵坐标之和为
求直线
的方程.
(2)证明:线段
的垂直平分线过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.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/4c9ab51e0bae2c3b0f6c556ea9cdf7ad.png)
(1)若
![](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/5f9761eeec66bbc7a748bad1e79556bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)证明:线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2021-02-14更新
|
103次组卷
|
2卷引用:广西贵港市2020-2021学年度高二上学期期末数学(文)试题
解题方法
9 . 设A是圆
上的任意一点,l是过点A且与x轴垂直的直线,B是直线l与x轴的交点,点Q在直线l上,且满足
.当点A在圆O上运动时,记点Q的轨迹为曲线C.
(1)求曲线C的方程;
(2)已知直线
与曲线C交于M,N两点,点M关于y轴的对称点为
,证明:直线
过定点
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e01268ac8e838d0f45ccb35bc1d479d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/258b477065719b6e559844df89e51042.png)
(1)求曲线C的方程;
(2)已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc46e6bd956e9c927cdf5345a7639082.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da895d8bd043625a0839128252130d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94e8ac27d63ade4077fdcf7cf136cf71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b452800c0fdef2a0c31518164423b13.png)
您最近一年使用:0次
名校
解题方法
10 . 已知椭圆C:
(
)的两个顶点分别为点
,
,离心率为
.
(1)求椭圆C的方程;
(2)点D为x轴上一点,过D作x轴的垂线交椭圆C于不同的两点M,N,过D作
的垂线交
于点E.证明:
与
的面积之比为定值.
![](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/913f78382630e50543e5f7192cae3ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c850811ba59a05e945a665196539a048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
(1)求椭圆C的方程;
(2)点D为x轴上一点,过D作x轴的垂线交椭圆C于不同的两点M,N,过D作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15514bc735fe4b744672edefe00009c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9830cb9f3785e2b262b99bf831ced636.png)
您最近一年使用:0次
2021-01-13更新
|
1056次组卷
|
6卷引用:广西蒙山县蒙山中学2020-2021学年高二下学期第一次月考数学(文)试题
广西蒙山县蒙山中学2020-2021学年高二下学期第一次月考数学(文)试题(已下线)专题24 椭圆(解答题)-2021年高考数学(文)二轮复习热点题型精选精练(已下线)专题26 椭圆(解答题)-2021年高考数学(理)二轮复习热点题型精选精练(已下线)专题25 椭圆(解答题)-2021年高考数学二轮复习热点题型精选精练(新高考地区专用)天津市河北区2020-2021学年高三上学期期末数学试题(已下线)11.4 直线与圆锥曲线的位置关系