1 . 已知椭圆C的焦点在x轴上,离心率等于
,且过点(1,
).
(Ⅰ)求椭圆C的标准方程;
(Ⅱ)过椭圆C的右焦点F作直线l交椭圆C于A,B两点,交y轴于M点,若
=λ1
,
=λ2
,求证:λ1+λ2为定值.
![](https://img.xkw.com/dksih/QBM/2016/4/19/1572596246355968/1572596251918336/STEM/dd4ba97c2e3e4045a890aae184321219.png)
![](https://img.xkw.com/dksih/QBM/2016/4/19/1572596246355968/1572596251918336/STEM/dd4ba97c2e3e4045a890aae184321219.png)
(Ⅰ)求椭圆C的标准方程;
(Ⅱ)过椭圆C的右焦点F作直线l交椭圆C于A,B两点,交y轴于M点,若
![](https://img.xkw.com/dksih/QBM/2016/4/19/1572596246355968/1572596251918336/STEM/573a4daa5e9f4650a83db031418257ba.png)
![](https://img.xkw.com/dksih/QBM/2016/4/19/1572596246355968/1572596251918336/STEM/f294dd8ec6304252a2dcf252903dcd2f.png)
![](https://img.xkw.com/dksih/QBM/2016/4/19/1572596246355968/1572596251918336/STEM/ae7ee9c5215c4105959c858c970d937b.png)
![](https://img.xkw.com/dksih/QBM/2016/4/19/1572596246355968/1572596251918336/STEM/790906411b21418cb44a3f390d48944c.png)
您最近一年使用:0次
2016-12-04更新
|
826次组卷
|
3卷引用:2016届云南师范大附中高考适应性月考三理科数学试卷
2 . 如图,在四棱锥
中,平面
平面
,
.
(1)证明:
平面
;
(2)求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5164a3cc47e266446d49127e2ef10c37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7090639341730951c1bc3c9b6164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74468c37b7835e638c75c4fbbeb54010.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/3/44cff5b5-9f26-4368-8bba-aff181a1af68.png?resizew=160)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d2d217e9bcd059908f117dfc4d4259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aad963ee7cdc7ff35a8dd23685589d1.png)
您最近一年使用:0次
2016-12-04更新
|
1474次组卷
|
9卷引用:云南省云天化中学2019-2020学年高二下学期开学考试数学(理科)试题
云南省云天化中学2019-2020学年高二下学期开学考试数学(理科)试题2015-2016学年湖南师大附中高二下期中文科数学试卷第二章 高考链接(二)吉林省长春外国语学校2019-2020学年高二上学期期中考试数学(理)试题2020届海南省海口市第四中学高三上学期第二次月考数学试题(已下线)专题07 空间向量与立体几何-十年(2012-2021)高考数学真题分项汇编(浙江专用)辽宁省实验中学2022-2023学年高二上学期10月考数学试题(已下线)专题24 空间向量与空间角的计算-十年(2011-2020)高考真题数学分项(已下线)专题23 立体几何解答题(理科)-2
3 . 如图,四棱锥
的底面是矩形,
为等边三角形,且平面
平面
,
,
分别为
和
的中点.
![](https://img.xkw.com/dksih/QBM/2016/5/30/1572657322524672/1572657328586752/STEM/937b2a276e774987870cb39f4e98dbb6.png)
(I)证明:
平面
;
(II)证明:平面
平面
;
(III)若矩形
的周长为
,设
,当
为何值时,四棱锥
的体积最大?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56fbe4053a65b67949981f24c0d30b6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62781acd37e2a67368a8f6c02bc9a05e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/587fc4851a07e9c5d4f1691f415c3de4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34b0c4c783dd55685bd3e88bb31c6696.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ebbd866e455cf80ea669c9f56f792c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2391c0e2fc44598610d519dacb778062.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/435f34602291e9e293ff64a1606e29dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccdaa0ce95c0c22db19fe7f5110d7818.png)
![](https://img.xkw.com/dksih/QBM/2016/5/30/1572657322524672/1572657328586752/STEM/937b2a276e774987870cb39f4e98dbb6.png)
(I)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b15ff17f7c4e9ba8471adc8126b2d092.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baf5cb457a768676c10da10ccfdbb2fe.png)
(II)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf96cdc4fd23a956ad7be732b4d59b7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baf5cb457a768676c10da10ccfdbb2fe.png)
(III)若矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34b0c4c783dd55685bd3e88bb31c6696.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c2327fb36a53fc1849393c9a24b508c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56fbe4053a65b67949981f24c0d30b6b.png)
您最近一年使用:0次
2014·云南红河·一模
4 . 函数
.
(1)若
,求函数
的定义域
;
(2)设
,当实数
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ea38df527794c3b56ed92ff2bb4bee.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab839d8569171afab5ed55c22013aa72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9ff5406ca1237ba1efad11a9cb0fd17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9c5a3d0c7c7c9ee158cc8ee45e5c8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76091880e7030634ad1a504c6089809c.png)
您最近一年使用:0次
2016-12-03更新
|
1871次组卷
|
4卷引用:2014届云南省红河州高三毕业生复习统一检测理科数学试卷
(已下线)2014届云南省红河州高三毕业生复习统一检测理科数学试卷(已下线)2014届云南省红河州高三毕业生复习统一检测文科数学试卷2016届安徽省马鞍山二中等高三第三次联考理科数学试卷2016届安徽省马鞍山二中等高三第三次联考文科数学卷
5 . 已知
分别是直线
和
上的两个动点,线段
的长为
,
是
的中点.
(1)求动点
的轨迹
的方程;
(2)过点
任意作直线
(与
轴不垂直),设
与(1)中轨迹
交于
两点,与
轴交于
点.若
,
,证明:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21d532ce76942846df88c6f66112e50f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb60dd65c10abde3ba0e4a60132d34d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/451fc6e4248b63e70595f23842f06c93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/e6670479a0083dd2dfd5ad55b47b1ab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd0091a17b19635ac90ae1763d944480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f36ebafa0f890e691a274cebc371498f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febf7413b35cf2889fdb57a6b519087c.png)
您最近一年使用:0次
2016-12-01更新
|
536次组卷
|
4卷引用:云南省昆明市第三中学2022届高三上学期第四次综合测试数学(文)试题
云南省昆明市第三中学2022届高三上学期第四次综合测试数学(文)试题云南省昆明市第三中学2022届高三上学期第四次综合测试数学(理)试题(已下线)河北省正定中学2010年高三一模模拟(三)数学理(已下线)2012届江苏省高三高考压轴数学试卷
2010·山东聊城·二模
解题方法
6 . 已知椭圆
经过点
,离心率为
.
(1)求椭圆
的方程;
(2)设直线
与椭圆
交于
、
,点
关于
轴的对称点
(
与
不重合),则直线
与
轴是否交于一定点?若是,请写出定点坐标,并证明你的结论;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1497ffc1b18295b5f12c4a566a3285e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f99bddac58806e0024a1268378fe53d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f51698f7095e795d4f0527b986ac1db2.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4167feb456b79187e3582a90bdc0ffb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4167feb456b79187e3582a90bdc0ffb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5427b3e28d3a34a59e2f7ceacd3d5f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
2016-11-30更新
|
1532次组卷
|
10卷引用:2016届云南省玉溪市一中高三上学期期中理科数学试卷
解题方法
7 . 已知函数
,且
,且
.
(Ⅰ)求函数
的解析式;
(Ⅱ)判断函数
在定义域上的奇偶性,并证明;
(Ⅲ)对于任意的
,
恒成立,求实数m的取值范围.
![](https://img.xkw.com/dksih/QBM/2016/4/22/1572601060786176/1572601066905600/STEM/c284204939df48deac31b8b261ae68a9.png)
![](https://img.xkw.com/dksih/QBM/2016/4/22/1572601060786176/1572601066905600/STEM/d82a17b3f8cd4eea9731e9825dee8c83.png)
![](https://img.xkw.com/dksih/QBM/2016/4/22/1572601060786176/1572601066905600/STEM/c370f9cd59cb4db99de3642487e783f3.png)
(Ⅰ)求函数
![](https://img.xkw.com/dksih/QBM/2016/4/22/1572601060786176/1572601066905600/STEM/b83df62b6643440e8d7de950faaa816e.png)
(Ⅱ)判断函数
![](https://img.xkw.com/dksih/QBM/2016/4/22/1572601060786176/1572601066905600/STEM/b83df62b6643440e8d7de950faaa816e.png)
(Ⅲ)对于任意的
![](https://img.xkw.com/dksih/QBM/2016/4/22/1572601060786176/1572601066905600/STEM/206af1e5218a4b9cb1ac94ea38910e3e.png)
![](https://img.xkw.com/dksih/QBM/2016/4/22/1572601060786176/1572601066905600/STEM/9771cbb49a0f441fab0e9c72ba592478.png)
您最近一年使用:0次
解题方法
8 . 设函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf3473c109ec4d71f833dad76eb5d145.png)
(1)若关于
的不等式
在
有实数解,求实数
的取值范围;
(2)设
,若关于
的方程
至少有一个解,求
的最小值.
(3)证明不等式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf3473c109ec4d71f833dad76eb5d145.png)
(1)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfcbc3ffca28dadd8241999c35cb49c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb91e6d30e5e96f240b538c55aa1da9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ed0a706f0f99690a25194a4586cea66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790b807c406d6f22dc559b1ec16f9356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
(3)证明不等式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/688955342aa1c114d7fcc04618974410.png)
您最近一年使用:0次
9 . 已知函数
,
,其中![](https://img.xkw.com/dksih/QBM/2016/1/6/1572421892243456/1572421898289152/STEM/4e01ab67f8d64612908c03f7dfbc7a0a.png)
(Ⅰ)求
在
处的切线方程;
(Ⅱ)当
时,证明:![](https://img.xkw.com/dksih/QBM/2016/1/6/1572421892243456/1572421898289152/STEM/1aa4fc503b1c4ae78f58456a19282352.png)
.
![](https://img.xkw.com/dksih/QBM/2016/1/6/1572421892243456/1572421898289152/STEM/b2e8c13681a842e7b53fea8a144bd753.png)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1572421892243456/1572421898289152/STEM/a88d66adb1f04797a297624db9271d53.png)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1572421892243456/1572421898289152/STEM/4e01ab67f8d64612908c03f7dfbc7a0a.png)
(Ⅰ)求
![](https://img.xkw.com/dksih/QBM/2016/1/6/1572421892243456/1572421898289152/STEM/1aa4fc503b1c4ae78f58456a19282352.png)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1572421892243456/1572421898289152/STEM/8766076937ff4bc18fd4cded9374b857.png)
(Ⅱ)当
![](https://img.xkw.com/dksih/QBM/2016/1/6/1572421892243456/1572421898289152/STEM/41d1ccacf523426aa2f9ec083b6e7ba7.png)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1572421892243456/1572421898289152/STEM/1aa4fc503b1c4ae78f58456a19282352.png)
![](https://img.xkw.com/dksih/QBM/2016/1/6/1572421892243456/1572421898289152/STEM/908bc3156526477b9302c7f1e89936fe.png)
您最近一年使用:0次
10 . 已知
是定义在
上的奇函数,且
,当![](https://img.xkw.com/dksih/QBM/2015/3/11/1571996161892352/1571996167913472/STEM/b60e44714fbe414e97027a57d54e666d.png)
,
时,有
成立.
(Ⅰ)判断
在
上的单调性,并加以证明;
(Ⅱ)若
对所有的
恒成立,求实数m的取值范围.
![](https://img.xkw.com/dksih/QBM/2015/3/11/1571996161892352/1571996167913472/STEM/4c94a57dc26240389d1b719aacc41ade.png)
![](https://img.xkw.com/dksih/QBM/2015/3/11/1571996161892352/1571996167913472/STEM/23ee08cf70784295a8922ac758f6b6be.png)
![](https://img.xkw.com/dksih/QBM/2015/3/11/1571996161892352/1571996167913472/STEM/0cb1a0d220b04f638fa00e0d38b434e8.png)
![](https://img.xkw.com/dksih/QBM/2015/3/11/1571996161892352/1571996167913472/STEM/b60e44714fbe414e97027a57d54e666d.png)
![](https://img.xkw.com/dksih/QBM/2015/3/11/1571996161892352/1571996167913472/STEM/23ee08cf70784295a8922ac758f6b6be.png)
![](https://img.xkw.com/dksih/QBM/2015/3/11/1571996161892352/1571996167913472/STEM/cd173ee55c6c40219c3c473998c22f8b.png)
![](https://img.xkw.com/dksih/QBM/2015/3/11/1571996161892352/1571996167913472/STEM/d8f8fc9b29ad4cfa9dcdf5874296ebeb.png)
(Ⅰ)判断
![](https://img.xkw.com/dksih/QBM/2015/3/11/1571996161892352/1571996167913472/STEM/4c94a57dc26240389d1b719aacc41ade.png)
![](https://img.xkw.com/dksih/QBM/2015/3/11/1571996161892352/1571996167913472/STEM/23ee08cf70784295a8922ac758f6b6be.png)
(Ⅱ)若
![](https://img.xkw.com/dksih/QBM/2015/3/11/1571996161892352/1571996167913472/STEM/932418156d07413f843d713a44562a2a.png)
![](https://img.xkw.com/dksih/QBM/2015/3/11/1571996161892352/1571996167913472/STEM/33043c14b8464ed9a58c3c80680970e7.png)
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