解题方法
1 . 正方体
的棱长为
为该正方体侧面
内的动点(含边界),若
分别与直线
所成角的正切值之和为
,则四棱锥
的体积的取值范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc79c14b2ed75664547ddd8ba5b1be9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c52091eb745de866044477641a7c55f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
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2 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0437d7f883ee4ae9f42ac3103940086.png)
(1)求函数
的单调区间;
(2)若方程
的两个实数根互为相反数,求实数
的值;
(3)在条件(2)下,若函数
有两个不同的零点
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0437d7f883ee4ae9f42ac3103940086.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a8d15bcdb0c20c9abee93881d68eb47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8260d7692bc7723a03f8e2e90d5aa91a.png)
(3)在条件(2)下,若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a37144fe84d91cdde66f37a4d5bbdf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/564b94fb68ac9f108c3407f9b09556ab.png)
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2024-01-11更新
|
465次组卷
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3卷引用:江西省赣州市南康中学2024届高三上学期七省联考考前数学猜题卷(四)
2024·全国·模拟预测
名校
解题方法
3 . 已知函数
,
,则函数
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5306d21464bee4ea2aac79cbc43812.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf039c46a25e331446c6ee1e9af3c82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
4 . 已知函数
,
的图象在点
处的切线方程为
.
(1)求
的解析式;
(2)证明:
,
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/817e343c0cc21f5c49b71715125686c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9f8845aa2b51c460f2d798c9f62fa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3192622d8f2e4d7192ddf20737f9f89c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e81b4aac721bcd4a49593b48a28a8f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2465bd41ef1cd800bf9980eee4ccdbdc.png)
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2024-01-15更新
|
779次组卷
|
5卷引用:江西省2024届高三上学期12月统一调研测试数学试题
江西省2024届高三上学期12月统一调研测试数学试题江西省赣州市大余县部分学校2024届高三上学期12月统一调研测试数学试题(已下线)模块三 大招25 不等式证明——指对处理安徽省合肥市一六八中学2024届高三上学期期末模拟数学试题(已下线)模块三 大招6 不等式证明——指对处理
2023·全国·模拟预测
名校
解题方法
5 . 已知椭圆C:
的两焦点分别为
,并且经过点
.
(1)求椭圆C的方程;
(2)过
的直线交椭圆C于A,B两点,设直线
与C的另一个交点分别为M,N,记直线AB,MN的倾斜角分别为
,当
取得最大值时,求直线AB的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5439f5ff9bd5deec0f0ef35c6f605b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a34dda3fc71497fe1a7ef2f3d2c2a953.png)
(1)求椭圆C的方程;
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0068ae8bb3fb1c75a3843e590fb30607.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd927b4b5a7875528c1b54aa4bb8b2dd.png)
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2024-01-02更新
|
436次组卷
|
6卷引用:江西省上饶市玉山县第二中学2023-2024学年高二上学期12月月考数学试题
江西省上饶市玉山县第二中学2023-2024学年高二上学期12月月考数学试题(已下线)2024年全国高考名校名师联席命制型数学信息卷(七)(已下线)2024年全国高考名校名师联席命制数学(理)信息卷(四)(已下线)2024年全国高考名校名师联席命制数学(文)信息卷(三)四川省成都市石室中学2023-2024学年高二上学期期末综合复习数学试题(一)山东省菏泽市2024届高三上学期期末考试数学试题(B)
名校
解题方法
6 . 已知椭圆
的离心率为
,短轴长为2,过点
斜率不为0的直线
与椭圆有两个不同的交点A,B.
(1)求椭圆的标准方程;
(2)椭圆左右顶点为M,N,设
中点为Q,直线
交直线
于点R,
是否为定值,若是请求出定值,若不是请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87cf6cca367ce2afd96d7d951f9587e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e9b5e076078240e0c5ad9763a9824d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(1)求椭圆的标准方程;
(2)椭圆左右顶点为M,N,设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/073ee2d24f266cb56a4579d45093ed7e.png)
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7 . 定义:设二元函数
在点
的附近有定义,当
固定在
而
在
处有改变量
时,相应的二元函数
有改变量
,如果
存在,那么称此极限为二元函数
在点
处对
的偏导数,记作
.若
在区域D内每一个点
对
的偏导数都存在,那么这个偏导数就是一个关于x,y的二元函数,它就被称为二元函数
对自变量
的偏导函数,记作
.已知
,若
,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e664fa90a859ab05fe49972a474a5fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23b4f86e48e2b0d63c1865c60ed1e4d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8112f9185c7d48b015d9cd0525616b31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1268e217016ff7e12b9bc51341c4cde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e664fa90a859ab05fe49972a474a5fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81443d23814e97aca7dc31d6a6761e37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9b46f5293a40631887c03efab57a24c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e664fa90a859ab05fe49972a474a5fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23b4f86e48e2b0d63c1865c60ed1e4d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/205aa63ae7eac640729254cccc919a33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e664fa90a859ab05fe49972a474a5fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a79a33a83a7ba57a34b5093d1d1d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e664fa90a859ab05fe49972a474a5fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d827cd88fa489081f6de96c9b1949d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3a0767e51cf2027ba71e6ec233b3de0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4642bed61cb89af0efa1c53294541f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bc92eb72cfdadd35f9f514090b40b8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-12-22更新
|
524次组卷
|
4卷引用:江西省2024届高三上学期12月统一调研测试数学试题
江西省2024届高三上学期12月统一调研测试数学试题江西省赣州市大余县部分学校2024届高三上学期12月统一调研测试数学试题(已下线)高二 模块3 专题1 第4套 小题进阶提升练(已下线)高二 模块3 专题1 第4套 小题进阶提升练(苏教版)
名校
8 . 已知函数
.
(1)当
时,存在
,使得
,求M的最大值;
(2)已知m,n是
的两个零点,记
为
的导函数,若
,且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff9cc4defcee33949bb8032432cf038d.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f22a4a0dd7307a1323d25331e60782d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83a6c0fddb9074dfc96be03b4aa24d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5001237412b7d1f4bb7e7d6ef1b45e5.png)
(2)已知m,n是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beea6fb7638645e13fe701fcf798fffc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7870c36161f465fc992534b5fc3777f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a8dab5b1ab75bc4c09f774b4c3d40ea.png)
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2023-12-20更新
|
480次组卷
|
4卷引用:江西省部分学校2024届高三上学期12月联考数学试题
名校
解题方法
9 . 椭圆
与双曲线
有相同的焦点,且过
.
(1)求椭圆
的方程;
(2)如图所示,记椭圆的左、右顶点分别为
,
,当动点
在定直线
上运动时,直线
,
分别交椭圆于两点
,
.
(i)证明:点B在以
为直径的圆内;
(ii)求四边形
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ffb877445206ef92ce21c0856c5408e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2de52259b426acb42761fec59a7748.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/1/2eea8918-94ca-4ef3-bd39-183eade5b525.png?resizew=173)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)如图所示,记椭圆的左、右顶点分别为
![](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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(i)证明:点B在以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
(ii)求四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d4ab45e8e8f0084d8d90a4c1233d86.png)
您最近一年使用:0次
2023-11-29更新
|
1065次组卷
|
4卷引用:江西省上饶市清源学校2023-2024学年高二上学期12月月考数学试题
解题方法
10 . 已知函数
.
(1)证明:当
时,
恒成立;
(2)首项为
的数列
满足:当
时,有
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a930f36a63e67ba5ce2ab3b8320c7eb0.png)
(1)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9518d59e737e3ac698165c5ec17ba636.png)
(2)首项为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbaae3509b29f0bc77e8687702b7484d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b242016eaeac01ac3d573fa1932a3910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4138f481d09d1d1fc962d5a90245a7.png)
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