名校
解题方法
1 . 如图,已知
是圆
的直径,
平面
,
是
的中点,
.
平面
;
(2)求证:平面
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1afe4a56c1bd9fbe4850410e4133bd24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c372d059202ec388960b125d4a87dc84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89b1e86a4f4bd9250b5b0a752b838779.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
2 . 证明下列不等式
(1)已知
,
,
,且
,求证:
.
(2)已知
,
,
,求证:
.
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cec12441802f71e803efaf2c62ee588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/751e274e9107d780c39ba9c49d6daefb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/135125d796a469155fc4a22dc6be3d10.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cad3aaeb5b444feb152378278f68863.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5cc7582a7b091b3f0f5a51325e1d0a1.png)
您最近一年使用:0次
名校
解题方法
3 . 已知函数
,
.
(1)若函数
在R上单调递减,求a的取值范围;
(2)已知
,
,
,
,求证:
;
(3)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d013335d41c7a1e51b381eb8e7ef977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/111870a9ef48f1bb2797ae8f1825a8f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9897559d21ef1971f497be4269b107aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0527a896aec4a245945e5edee00deed.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64f6bf190c55c3a0ddbca2ff7a5ecf42.png)
您最近一年使用:0次
2023-12-30更新
|
1121次组卷
|
4卷引用:陕西省名校协作体2024届高三上学期一轮复习联考(四)数学(文)试题
陕西省名校协作体2024届高三上学期一轮复习联考(四)数学(文)试题(已下线)专题2-6 导数大题证明不等式归类-1(已下线)导数及其应用-综合测试卷A卷吉林省通化市梅河口市第五中学2023-2024学年高二下学期第一次月考数学试题
名校
解题方法
4 . 如图所示,四棱锥
的底面是边长为1的正方形,
,E为
上一点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/16/d5a2014a-22ca-4d3a-bcd3-26bf77127c50.png?resizew=154)
(1)求证:
平面
;
(2)在侧棱
上是否存在一点F,使得
平面
?若存在,指出F点的位置,并证明;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e896ec179a48561a0671416340ddfc10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afcbbbe350b38381d1999e2886d45f0e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/16/d5a2014a-22ca-4d3a-bcd3-26bf77127c50.png?resizew=154)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)在侧棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9d32e76582bf550593fdef53e081225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46e2da608b66c9aee03e2503388ba4fd.png)
您最近一年使用:0次
2022-09-15更新
|
1841次组卷
|
5卷引用:陕西省渭南市华州区咸林中学2022-2023学年高三上学期第二阶段考试理科数学试题
解题方法
5 . 如图1,已知正方形
的边长为
,
,
分别为
,
的中点,将正方形
沿
折成如图2所示连结
,且
,点
在线段
上(包含端点)运动,连接
.
![](https://img.xkw.com/dksih/QBM/2022/5/14/2979121362894848/2980612692860928/STEM/b022c895-be02-462b-8691-fb608bd85486.png?resizew=396)
(1)若
为
的中点,直线
与平面
的交点为
,试确定点
的位置,并证明直线
平面
;
(2)点
为
的中点,求证
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ff635d2c15b5b477ee33d7d2bfe4408.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/2022/5/14/2979121362894848/2980612692860928/STEM/b022c895-be02-462b-8691-fb608bd85486.png?resizew=396)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907d5147cea4c9ce855074864fe54506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6072ec6dfc0203cabb1fe289a5ddc8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/558ce69401f3c97930f00ba0e2aa6647.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06ade1ccd464353eb8ceeb312339dc14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369eb8ad56da7dc1cdb7c43762be4bee.png)
您最近一年使用:0次
6 . 已知数列
的前
项和为
.
(1)从下面①②③中选取两个作为条件,证明另外一个成立,
①
,②
,③![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b15e44689cdcf4ea14554a9fa8d02af.png)
(2)在(1)的条件下,若
,数列
的前
项和为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(1)从下面①②③中选取两个作为条件,证明另外一个成立,
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58c24e6d5775cb724b2d58ca58a869da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8505a58fc92e7abb293258e66d627368.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b15e44689cdcf4ea14554a9fa8d02af.png)
(2)在(1)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0f6000421c5370e4b89f23be199f388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cfc94c94d8337080b8db53c02414d7a.png)
您最近一年使用:0次
名校
解题方法
7 . 如图,在四棱锥
中,平面
平面
,
,
,
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/828ecdc7-4e9b-42f0-a369-850d04f5a2d6.png?resizew=220)
(1)求证:
;
(2)过
作截面与线段
交于点H,使得
平面
,试确定点H的位置,并给出证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb96e0331eebe80ed1ff610faf531fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95a94fb1f77d2451d00cc745252fe184.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/828ecdc7-4e9b-42f0-a369-850d04f5a2d6.png?resizew=220)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb5d56d8170b764b80a672cd6c861921.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12d8677ae5ca7acf874d93789425d172.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c0c35ada784e2702bcc12a405f7ec5.png)
您最近一年使用:0次
2020-05-14更新
|
375次组卷
|
5卷引用:陕西省咸阳市武功县2021届高三下学期第二次质量检测文科数学试题
陕西省咸阳市武功县2021届高三下学期第二次质量检测文科数学试题2020届湖南省娄底市高三高考仿真模拟文科数学试题宁夏回族自治区银川一中2020届高三下学期第五次模拟考试数学(文)试题(已下线)考点24 空间直线、平面的平行、垂直问题-2021年新高考数学一轮复习考点扫描山西省运城市景胜中学2020-2021学年高二上学期9月适应性测试数学试题
名校
解题方法
8 . 已知数列
中,
,其前
项的和为
,且当
时,满足
.
(1)求证:数列
是等差数列;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c154da7ed535cfd1edf19bc6d907ae.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8050391385b496e9c059201e4f12600a.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd74d291484f4da59ac2149d2ec135c.png)
您最近一年使用:0次
2019-12-01更新
|
1846次组卷
|
7卷引用:陕西省西安市西安高新第一中学分校2022-2023学年高三上学期期中文科数学试题
9 . 设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c30ee388d945875e585c25daec7e2fc4.png)
.
(1)若
,求证:
是完全平方数;
(2)证明:存在无穷多个正整数对
,使得
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c30ee388d945875e585c25daec7e2fc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82b872914335d22f93f6c866d2b5c61.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b2fb1017d5dfe3a300de3e14a71b6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43f41be870e84c819362787849770519.png)
(2)证明:存在无穷多个正整数对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/698c4d4e50062b4a7dd70fe1b4ab4fd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b2fb1017d5dfe3a300de3e14a71b6f.png)
您最近一年使用:0次
10 . (12分)
如图,四边形ABCD为梯形,AB//CD,
平面ABCD,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be41c4e49c8e44aedfc1370737a848b.png)
为BC的中点.
(1)求证:平面
平面PDE.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/17/5c969ea1-612a-4080-806b-4d73284c3e43.png?resizew=160)
(2)在线段PC上是否存在一点F,使得PA//平面BDF?若存在,指出点F的位置,并证明;若不存在,请说明理由.
如图,四边形ABCD为梯形,AB//CD,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be41c4e49c8e44aedfc1370737a848b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab161f344f385a0ec14ad5a7f2b05027.png)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a3fd5284e160896f07ce367645fd04.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/17/5c969ea1-612a-4080-806b-4d73284c3e43.png?resizew=160)
(2)在线段PC上是否存在一点F,使得PA//平面BDF?若存在,指出点F的位置,并证明;若不存在,请说明理由.
您最近一年使用:0次
2018-04-25更新
|
2355次组卷
|
13卷引用:陕西省咸阳市武功县2020-2021学年高三上学期第一次质量检测文科数学试题
陕西省咸阳市武功县2020-2021学年高三上学期第一次质量检测文科数学试题2015届四川省遂宁市高三第二次诊断考试文科数学试卷2015届宁夏固原市第一中学高三最后冲刺模拟文科数学试卷四川省成都市第七中学2016-2017学年高三下学期零诊模拟数学(文)试题普通高等学校招生全国统一考试2018届高三下学期第二次调研考试数学(文)试题【区级联考】广东省深圳市宝安区2019届高三9月调研考试数学文试题(已下线)专题09 立体几何(讲)-2021年高考数学二轮复习讲练测(文科)(文理通用)四川省成都市第七中学2017-2018学年高二上学期第一次月考数学(文)试题【全国校级联考】河北省鸡泽、曲周、邱县、馆陶四县2017-2018学年高二下学期期末联考数学(文)试题四川省成都外国语学校2020-2021学年高二上学期12月月考数学(文)试题四川省成都外国语学校2020-2021学年高二上学期12月月考数学(理)试题天津市宁河区芦台第四中学2019-2020学年高一下学期期末数学试题(已下线)专题四 期末高分必刷解答题(32道)-《考点·题型·密卷》