名校
解题方法
1 . 已知
,
分别为椭圆
在
轴正半轴,
轴正半轴上的顶点,原点
到直线
的距离为
,且
.
(1)求椭圆
的离心率;
(2)直线
与圆
相切,并与椭圆
交于
,
两点,若
,求
的值.
![](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/0f04443a0c1cf4808aea741c9f9379b2.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be0a31202a7a69d530c05a75229e6ea6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a9fd29dc7f8bc359f9e5e0e461c48f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc5bd66dd6d5e09ff0893a938aed56e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d61985901c2bc698d72ac88f4e1eb65.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/ad1fc6f3205dd6edd6f611f24e8666cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2020-08-09更新
|
154次组卷
|
5卷引用:2017届山西省长治二中、晋城一中、康杰中学、临汾一中、忻州一中五校高三第四次联考数学(文)试卷
2017届山西省长治二中、晋城一中、康杰中学、临汾一中、忻州一中五校高三第四次联考数学(文)试卷(已下线)专题9.5 椭圆(练)【文】-《2020年高考一轮复习讲练测》(已下线)测试卷20 椭圆(B)-2021届高考数学一轮复习(文理通用)单元过关测试卷(已下线)专题9.5 椭圆 (精练)-2021年高考数学(理)一轮复习讲练测重庆市第十一中学2021届高三下学期5月月考数学试题
解题方法
2 . 已知椭圆
与双曲线
的焦点相同,则椭圆的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cc0fa5a83358bb3108d6ae9f1ee126c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-04-14更新
|
358次组卷
|
3卷引用:2020届山西省长治市高考第一次模拟数学(文)试题
解题方法
3 . 定义在
上的可导函数
的导函数为
,且有
,若
,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad2edd8edcb21bd41584daf9bb95a5c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e808873b814cf720131eeed83e88bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57290e53fe66b1dcffc5b6696e000c04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c9b49e39095f825b974d5c361acb922.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
解题方法
4 . 已知抛物线
上一点
到焦点的距离为
、
分别是抛物线
、圆
上的动点,当
取得最小值时,向量
在x轴正方向上的投影为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f780548b88643998d199cb1276617f8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e24f20ae68c5c0fe17cd77477ce46625.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/456221495658f84bd8b09b8184f513a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d44e8bc37ed03f44470762748a8f942a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e00e4e17dc8a2ef88e23e348439edf0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
5 . 定义在
上的函数
满足
,则不等式
的解集为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0c3138aa9fa08a974b472a42311f256.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09a3d27729c97102318dc7e5cfb312e1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
6 . 在平面直角坐标系
中,动点
关于
轴的对称点为
,且
,已知点
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c09a58721f24153a1dd3816c1279235.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1e44e2b3635b65b4cbea0040b4151ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/875973cd33f6656aaa3bb3d71b578e5a.png)
A.为定值![]() | B.为定值![]() | C.为定值![]() | D.不是定值 |
您最近一年使用:0次
2017-03-12更新
|
80次组卷
|
2卷引用:2017届山西省长治二中、晋城一中、康杰中学、临汾一中、忻州一中五校高三第四次联考数学(文)试卷
2013·山西长治·模拟预测
7 . 已知圆
与抛物线
的准线相切,则
的值为________ .
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625643008/STEM/f5e20b4d8d25446da9613fcad5a20d89.png?resizew=129)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625643008/STEM/49fff808b657417dba64f58a0d1f102f.png?resizew=109)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625643008/STEM/fc04ff06690845e2b59c16b36d799dc1.png?resizew=16)
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2016-12-02更新
|
984次组卷
|
3卷引用:2013届山西长治二中等四校高三第四次联考文科数学试卷
11-12高二下·浙江嘉兴·期中
8 . 已知函数
的图象为曲线C,若曲线C存在与直线
垂直的切线,则实数m的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf1b7b0402c2ec2e2c59521e93ade87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d585d2d6643471640905d234d9538c5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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