名校
1 . 已知如图,在直三棱柱
中,
,且
,
是
的中点,
是
的中点,点
在直线
上.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/ca1ab9c4-0335-456e-9513-c4f185296ab1.png?resizew=180)
(1)若
为
中点,求证:
平面
;
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46fe926770d2354e172dec02f5ce2efe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/ca1ab9c4-0335-456e-9513-c4f185296ab1.png?resizew=180)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2d4f20da6ea72be561d73239e88739b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3afbdf49ccb1a8c34aba401f39fa095e.png)
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2019-02-13更新
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636次组卷
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4卷引用:2015-2016学年河南省信阳高中高一下学期开学考试数学卷
名校
解题方法
2 . 已知椭圆
的左、右焦点分别为
,椭圆
过点
,直线
交
轴于
,且
为坐标原点.
(1)求椭圆
的方程;
(2)设点
是椭圆
的上顶点,过点
分别作直线
交椭圆
于
两点,设这两条直线的斜率分别为
,且
,证明:直线
过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfc2210a7e09298897f6585ad08a70d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98955362e81c6a616e2f555e97fcfca1.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.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/03df57efff473b3cfeb8503796b7d6b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ec7bcf5820dfe70290259c2d7ac1ea5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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|
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15卷引用:2017届河南商丘第一高级中学年高三上理开学摸底数学试卷
2017届河南商丘第一高级中学年高三上理开学摸底数学试卷2017届山西临汾一中高三10月月考数学(理)试卷2017届河北正定中学高三上月考一数学(理)试卷2017届山西大学附中高三二模测试数学试卷甘肃省西北师范大学附属中学2017届高三下学期第四次校内诊断考试数学(理)试题河北省衡水市阜城中学2017-2018学年高二上学期第五次月考数学(理)试题安徽省合肥庐阳高级中学2017-2018学年高二(上)期末考试理科数学试题陕西省西北工业大学附属中学2019届高三下学期模拟训练(4)数学(理)试题(已下线)专题07+圆锥曲线大题专项练习-2020-2021学年【补习教材·寒假作业】高二数学(人教A版2019)(已下线)专题15+圆锥曲线大题专项练习-2020-2021学年【补习教材·寒假作业】高二数学(理)(人教A版)(已下线)专题15+圆锥曲线大题专项练习-2020-2021学年【补习教材·寒假作业】高二数学(文)(人教A版)安徽省淮北市树人高级中学2020-2021学年高二上学期期末数学(文)试题广东省广州市奥林匹克中学2021-2022学年高二上学期期中数学试题(已下线)专题15 圆锥曲线大题专项练习(已下线)专题15 圆锥曲线大题专项练习
3 . 如图所示,在三棱柱ABC—A1B1C1中,AA1⊥BC,∠A1AC=60°,A1A=AC=BC=1,A1B=
.
(1)求证:平面A1BC⊥平面ACC1A1;
(2)如果D为AB中点,求证:BC1∥平面A1CD.
![](https://img.xkw.com/dksih/QBM/2017/4/25/1673280179126272/1736934758359040/STEM/f13a932e2f6c4c0f8fb00ed8930ad507.png?resizew=17)
(1)求证:平面A1BC⊥平面ACC1A1;
(2)如果D为AB中点,求证:BC1∥平面A1CD.
![](https://img.xkw.com/dksih/QBM/2017/4/25/1673280179126272/1736934758359040/STEM/a4388fafe959434bb19a6bc839d51f43.png?resizew=132)
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2017-07-24更新
|
527次组卷
|
4卷引用:2015-2016学年河南省郑州一中高一下期入学考试数学试卷
2015-2016学年河南省郑州一中高一下期入学考试数学试卷(已下线)2012届江苏省扬州中学高三12月练习数学试卷湖南省长沙市第一中学2015-2016学年高一12月月考数学试题江苏省苏州国际外语学校2018-2019学年高一下学期期中数学试题
4 . 已知
.
(Ⅰ)讨论
的单调性;
(Ⅱ)当
时,证明
对于任意的
成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42fd834b8bf4a6c661e3b51496214c47.png)
(Ⅰ)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e348ae599f137acafaa0310d43c80404.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/498f52f4f8f600cec9ba8b42e917ea46.png)
您最近一年使用:0次
2016-12-04更新
|
2711次组卷
|
20卷引用:2017届河南郑州一中网校高三入学测试数学(文)试卷
2017届河南郑州一中网校高三入学测试数学(文)试卷2017届四川绵阳中学高三上学期入学考试数学(理)试卷2016年全国普通高等学校招生统一考试理科数学(山东卷精编版)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市2020-2021学年高三上学期9月开学考试数学试题(已下线)2016年全国普通高等学校招生统一考试理科数学(山东卷参考版)天津市河西区2017届高三三模考试数学(理)试题2018届高三数学训练题(25 ):导数 陕西省西安市长安区第一中学2017-2018学年高二上学期期末考试数学(理)试题(已下线)2019高考备考一轮复习精品资料 【理】专题十四 导数在函数研究中的应用 教学案黑龙江省牡丹江市第一高级中学2018-2019学年高二下学期期末数学(理)试题江苏省苏州市常熟市2019-2020学年高二下学期期中数学试题(已下线)专题09 导数的综合应用-十年(2011-2020)高考真题数学分项江苏省南通如皋、盐城射阳2020-2021学年高三上学期期初联考数学试题(已下线)专题19 函数与导数综合-五年(2016-2020)高考数学(理)真题分项(二)湖南省常德市第一中学2021届高三下学期第五次月考数学试题四川省达州市大竹中学2020-2021学年高二下学期3月月考数学(理)试题(已下线)第四章 导数与函数的零点 专题四 导数中隐零点问题 微点2 导数中隐零点问题(二)(已下线)专题22 导数解答题(理科)-4专题35导数及其应用解答题(第二部分)
解题方法
5 . 已知函数
,
.
(1)当
时,求证:
,均有
;
(2)当
时,
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0ef6e9eeec8cb282b7bcae1b6ef140f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ad15d55077899eaf489e35669876e4.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a68ec001145a37fb7cc4d9632e11870.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec6154e00013d9dee84c0e941f676ea9.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b8c164755dc2d7cff80fb4c9cffc9be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
6 . 如图,已知圆O的直径AB=4,定直线L到圆心的距离为4,且直线L⊥直线AB.点P是圆O上异于A、B的任意一点,直线PA、PB分别交L与M、N点.
试建立适当的直角坐标系,解决下列问题:
![](https://img.xkw.com/dksih/QBM/2013/3/1/1571126143492096/1571126149234688/STEM/2388e72c-ad53-41db-b10e-6df4c245599d.png?resizew=242)
(1)若∠PAB=30°,求以MN为直径的圆方程;
(2)当点P变化时,求证:以MN为直径的圆必过圆O内的一定点.
试建立适当的直角坐标系,解决下列问题:
![](https://img.xkw.com/dksih/QBM/2013/3/1/1571126143492096/1571126149234688/STEM/2388e72c-ad53-41db-b10e-6df4c245599d.png?resizew=242)
(1)若∠PAB=30°,求以MN为直径的圆方程;
(2)当点P变化时,求证:以MN为直径的圆必过圆O内的一定点.
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2016-12-02更新
|
1029次组卷
|
8卷引用:2015-2016学年河南省信阳高中高一下学期开学考试数学卷
2015-2016学年河南省信阳高中高一下学期开学考试数学卷2015-2016学年湖北省随州市高二上学期期末理科数学试卷2015-2016学年辽宁省实验中学分校高一上期末数学试卷(已下线)2013届河北衡水中学高三第一次模拟考试文科数学试卷(已下线)2013-2014学年江苏省江阴市高二上学期期中考试数学试卷福建省龙岩第一中学2021-2022学年高二上学期模块考试(期中)数学试题安徽省滁州市定远县民族中学2022-2023学年高二上学期11月期中数学试题(已下线)专题04 圆的方程(考点清单)-2023-2024学年高二数学上学期期中考点大串讲(人教A版2019选择性必修第一册)
7 . 如图,直线
与圆切于点
,过
作直线与圆交于
两点,点
在圆上,且
.
![](https://img.xkw.com/dksih/QBM/2016/11/3/1573111429447680/1573111435993088/STEM/f90ae4f52cef411aa76787b279f46c88.png?resizew=185)
(1)求证:
;
(2)若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b70faeb8cf6c8bdb9aab3a006b4c974.png)
![](https://img.xkw.com/dksih/QBM/2016/11/3/1573111429447680/1573111435993088/STEM/f90ae4f52cef411aa76787b279f46c88.png?resizew=185)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0debf7dd6e6a8fd14253cb1a4a3bc59.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8edaed541a0f4ec6c8c7f22f37639796.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e0a538a73dd30cfcb47455e37bfb4cc.png)
您最近一年使用:0次
2016-12-04更新
|
390次组卷
|
5卷引用:2017届河南商丘第一高级中学年高三上理开学摸底数学试卷
名校
8 . 如图所示的几何体中,四边形ABCD是等腰梯形,AB//CD, ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2abbf9f692b6ed2cb5bff108fd9e8b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7265797582ffa650d8a7dd528467b086.png)
,若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ea30c4e5f1b1c19df1ac2f388db93da.png)
![](https://img.xkw.com/dksih/QBM/2019/2/11/2138416022528000/2139689374154752/STEM/9d889558aa124fbd9b383db8488c9a2b.png?resizew=233)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa75cbb03d8a2bab8e4164b5ad6a918d.png)
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2abbf9f692b6ed2cb5bff108fd9e8b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7265797582ffa650d8a7dd528467b086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53c51c25b65a37b676ae3c3b71c29f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ea30c4e5f1b1c19df1ac2f388db93da.png)
![](https://img.xkw.com/dksih/QBM/2019/2/11/2138416022528000/2139689374154752/STEM/9d889558aa124fbd9b383db8488c9a2b.png?resizew=233)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa75cbb03d8a2bab8e4164b5ad6a918d.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53bbf403747623f21f773ce1e961ee09.png)
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2016-12-04更新
|
1128次组卷
|
2卷引用:2015-2016学年河南省信阳高中高一下学期开学考试数学卷
9 . 如图,在四棱锥
中,
平面
,
,
,
,且
,
,点
在线段
上.
![](https://img.xkw.com/dksih/QBM/2016/3/10/1572531897286656/1572531903651840/STEM/57cc35b178814f71b35754c54c4da8a3.png)
(1)求证:
平面
;
(2)若二面角
的大小为
,试确定点
的位置.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6153163fecdf3f410411048428ccaef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/551e4cd76a93de89ea2750160fe74923.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/083201b6b527a852ff51831bd71c99cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a062298f1db766c18c6ab0c64d5bfe63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96dae94a9c26b6dd1dbcdebd20373033.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2478a116f8ff83c8477094e97c4211cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/2016/3/10/1572531897286656/1572531903651840/STEM/57cc35b178814f71b35754c54c4da8a3.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbe3ec31a79a171dcf274ff99e50762.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc8766798403c0bc53fc87c12e1ba6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15863d9a276e5b75a29dec3da0e98cc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
2016-12-04更新
|
434次组卷
|
2卷引用:2015-2016学年河南省南阳市一中高二下开学考理科数学卷
名校
解题方法
10 . 选修4-5:不等式选讲
设
.
(Ⅰ)求
的解集
;
(Ⅱ)当
时,求证:
.
设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ace36ab4d427c3039ceeee30aa9b36fe.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e1d4f963ff74354792d37b413eb1173.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7ac2b3a6640d7ecc3f9792d2f96e71e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5988a5a880268943e10b7af254c21298.png)
您最近一年使用:0次
2016-12-04更新
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250次组卷
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7卷引用:2017届河南息县第一高级中学高三上段测三试数学(理)试卷