名校
解题方法
1 . 已知
,函数
.
(1)当
时,求
的单调区间;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46d7d395bd6d134e8f42775d0da8e198.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f81ed7f6a4475e0fa682fa81ee747da3.png)
您最近一年使用:0次
2022-12-14更新
|
436次组卷
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3卷引用:重庆市綦江区等5地2023届高三上学期12月月考数学试题
名校
2 . 已知函数
.
(1)若
,证明:
;
(2)若
在
上有两个极值点,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3d6609f39dfd6a3820204a6e8b5f001.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f751007fe59964fcc05ccb00099a5199.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/261f9fd5f3d2a67143cdf65cca376c73.png)
您最近一年使用:0次
2021-08-16更新
|
250次组卷
|
2卷引用:重庆市綦江中学2020-2021学年高二下学期第一次阶段性考试数学试题
名校
解题方法
3 . 已知数列
,
,
,
.
(1)求数列
为等比数列,求
;
(2)若
且数列
的前
项和为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57bfc1f8772f31748bfdc280d0712fc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dcb582191f3c4690817af7fe4b5b28b.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e2de706dc5f0439b989273a5367f63a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f8b8313e2257186e481522d37c59ab0.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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/100fcebcea64120f68f80b40f198f442.png)
您最近一年使用:0次
2020-12-29更新
|
92次组卷
|
2卷引用:重庆市綦江实验中学2021届高三上学期12月月考数学试题
名校
4 . 已知
是抛物线
的焦点,斜率为
的直线
过点
且与抛物线
交于
,
两点,线段
的中点为
.
(1)证明:
为定值,并求出该定值;
(2)以
为直径作圆
,设圆
与
轴交于点
,
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3511cdc6a9b56bc1d9415d3d94ef0f67.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/797eaac99cd595fb2b8df9ef38fa8069.png)
(2)以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b537d1ae7648cdeebb5adf19721356d.png)
您最近一年使用:0次
2020-12-29更新
|
64次组卷
|
2卷引用:重庆市綦江实验中学2021届高三上学期12月月考数学试题
名校
5 . 如图,在四棱锥
中,
是以
为斜边的等腰直角三角形,
,
,
,
,
为
上一点.
![](https://img.xkw.com/dksih/QBM/2020/12/24/2621261692698624/2624813725278208/STEM/11a76621-9e58-44d8-b875-ab452ba3df20.png)
(1)若
为
的中点,证明:
平面
;
(2)若直线
与底面
所成角的正弦值为
,求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d02bd5cfe804460846423e77f72db10f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9026fbd7897d459b4d559a4b99f2e41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c58bafdd3bb54ba3491b49ab60b172f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed4e4b72607f34923d90890c25475449.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae774b98a2a4897967c89095fccb7c78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2783c8a27da6f95a077d9e7f8e47d386.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365822bd3945e6a3e871ca979c84cc12.png)
![](https://img.xkw.com/dksih/QBM/2020/12/24/2621261692698624/2624813725278208/STEM/11a76621-9e58-44d8-b875-ab452ba3df20.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365822bd3945e6a3e871ca979c84cc12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0138efef1aa28c5b2b1063426ad87a4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4da035673ef0edcfae6b72fb5e5ba34a.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b41d4070854edfaa24071137b314cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8067cbba862cec3ae86b5e14878c5bc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/873495e2ad831527b8c6559c0641a7f2.png)
您最近一年使用:0次
2020-12-29更新
|
449次组卷
|
3卷引用:重庆市綦江实验中学2021届高三上学期12月月考数学试题
重庆市綦江实验中学2021届高三上学期12月月考数学试题重庆市第八中学2021届高三上学期高考适应性月考(四)数学试题(已下线)第34讲 利用坐标法解决立体几何的角度与距离问题-2022年新高考数学二轮专题突破精练
名校
6 . 已知函数
.
(1)当
时,求曲线
在点
处的切线方程;
(2)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cb78f95705bf886cd6ecb60469e9a28.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd4ec6c78bab05a5df3d9954a70846ec.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deb45a2f8b4a14b62425a2561624e777.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be1d8c6384d7fabddb693b2b7fcdf4a.png)
您最近一年使用:0次
2019-12-27更新
|
1329次组卷
|
8卷引用:重庆市綦江中学2020-2021学年高二下学期第一次阶段性考试数学试题
重庆市綦江中学2020-2021学年高二下学期第一次阶段性考试数学试题黑龙江省哈尔滨市第九中学2019-2020学年高三上学期第一次月考数学文科试题贵州省贵阳市普通高中2019-2020学年高三上学期期末监测考试数学(文)试题2020届河南省高三普通高等学校招生模拟考试理科数学试题2020届福建省仙游县枫亭中学高三上学期期末数学试题(已下线)专题02 导数(文)第三篇-备战2020高考数学黄金30题系列之压轴题(新课标版)(已下线)专题02 导数(理)第三篇-备战2020高考数学黄金30题系列之压轴题(新课标版)四川省绵阳市南山中学实验学校2024届高三上学期“二诊”模拟数学(文)试题
名校
解题方法
7 . 如图,定义:以椭圆中心为圆心,长轴为直径的圆叫做椭圆的“辅圆”.过椭圆第一象限内一点P作x轴的垂线交其“辅圆”于点Q,当点Q在点P的上方时,称点Q为点P的“上辅点”.已知椭圆
上的点
的上辅点为
.
![](https://img.xkw.com/dksih/QBM/2020/3/7/2414498881355776/2416112467918848/STEM/0bc76bd9659847feb12e379fac458f85.png?resizew=262)
(1)求椭圆E的方程;
(2)若
的面积等于
,求上辅点Q的坐标;
(3)过上辅点Q作辅圆的切线与x轴交于点T,判断直线PT与椭圆E的位置关系,并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a200ca2c4af794f4d1c6a5443830b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ef233ad3db01fa3ce9ee94eaad8e64e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aedad6bb70631b944c69f8f0b02b35d6.png)
![](https://img.xkw.com/dksih/QBM/2020/3/7/2414498881355776/2416112467918848/STEM/0bc76bd9659847feb12e379fac458f85.png?resizew=262)
(1)求椭圆E的方程;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45b8b000c9c286bff8a480dbf03b513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(3)过上辅点Q作辅圆的切线与x轴交于点T,判断直线PT与椭圆E的位置关系,并证明你的结论.
您最近一年使用:0次
2020-03-10更新
|
348次组卷
|
2卷引用:重庆市綦江中学2021届高三下学期5月考前模拟数学试题
名校
8 . 如图,在多面体
中,
两两垂直,四边形
是边长为2的正方形,AC
DG
EF,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/09519bd8-4db8-427a-8d07-136acd7cf5ad.png?resizew=188)
(1)证明:
平面
.
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc1e1ab067de809e8ab8880ef20eef21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d83680a9b9a9526f75e0b37aa532132f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d70676406f26d339465fe3473c0c05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb31ef428bd9de9bc875b343feded3c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb31ef428bd9de9bc875b343feded3c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24ce38cc648118a6b00041384644f627.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/09519bd8-4db8-427a-8d07-136acd7cf5ad.png?resizew=188)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac0b72906641ed13716cfbce50923282.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb10d645970e5860afd3430957fab6c.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47342449ca1a78a7550975a7589003c5.png)
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2020-04-24更新
|
229次组卷
|
5卷引用:重庆市綦江中学2021届高三下学期5月考前模拟数学试题
名校
9 . 如图,四棱锥S—ABCD的底面是正方形,侧棱SA⊥底面ABCD,
过A作AE垂直SB交SB于E点,作AH垂直SD交SD于H点,平面AEH交SC于K点,且AB=1,SA=2.
![](https://img.xkw.com/dksih/QBM/2018/6/6/1961616249118720/2027507055173632/STEM/d20eeb5f64234c52bb1f599e436cb714.png?resizew=210)
(1)证明E、H在以AK为直径的圆上,且当点P是SA上任一点时,试求
的最小值;
(2)求平面AEKH与平面ABCD所成的锐二面角的余弦值.
过A作AE垂直SB交SB于E点,作AH垂直SD交SD于H点,平面AEH交SC于K点,且AB=1,SA=2.
![](https://img.xkw.com/dksih/QBM/2018/6/6/1961616249118720/2027507055173632/STEM/d20eeb5f64234c52bb1f599e436cb714.png?resizew=210)
(1)证明E、H在以AK为直径的圆上,且当点P是SA上任一点时,试求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3ef145010ce1a0c3119392e75e64548.png)
(2)求平面AEKH与平面ABCD所成的锐二面角的余弦值.
您最近一年使用:0次
10 . 如图,已知直线
的右焦点
,且交椭圆
于
两点,点
在直线
上的射影依次为点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/231e7373-04ea-4a79-b130-4a6fd94d7bb5.png?resizew=312)
(1)已知抛物线
的焦点为椭圆
的上顶点.
①求椭圆
的方程;
②若直线
交
轴于点
,且
,当
变化时,求
的值;
(2)连接
,试探索当
变化时,直线
是否相交于一定点
?若交于定点
,请求出
点的坐标并给予证明;否则说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ab022c3417bf9c24bc2f0672525194.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/fb4c2e693b99f17d7165d421c9ca9067.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/784db5ab45d9c453063ca79e762c2429.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca263cd4e8575dbe12b6d5b26ceb5d98.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/231e7373-04ea-4a79-b130-4a6fd94d7bb5.png?resizew=312)
(1)已知抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0a0ba4fbd3f2724f662e947e1293e84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
①求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
②若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afd6afa62e048046e11b15c89702e90c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32705e629d8b9187b53efeee6605af15.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e88ee337b7c9082f4fe84fd1752d55a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e88ee337b7c9082f4fe84fd1752d55a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
您最近一年使用:0次