1 . 已知函数
,其中
.
(1)若
,证明:
时,
;
(2)若函数
在其定义域内单调递增,求实数
的值;
(3)已知数列
的通项公式为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc918d83961931831f58ee6ee88ce37f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10ede78fd7ac619ea597856254bb5d75.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3647a896689efaec8ae89cad1cd845d5.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4633de9335d15d7685bdecb007a3678c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd30509fe23160914e2cea22efe4b101.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ccc81f3cbaab5987151e4235b3600f8.png)
您最近一年使用:0次
7日内更新
|
239次组卷
|
2卷引用:黑龙江省大庆市实验中学实验二部2023-2024学年高三下学期阶段考试(二)数学试题
名校
2 . 已知函数
其反函数为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
(1)求证:对任意
都有
,对任意
都有![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c70f029102bd0b5e762717c3889671fb.png)
(2)令
,讨论
的定义域并判断其单调性(无需证明).
(3)当
时,求函数
的值域;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bb2fb6043949ffd4a0fc14967e23c90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
(1)求证:对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dcbca3478eae63853d2aab5332e2e56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0b8e9b3f07d91da4d256d18df240fe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edae93ec9de65d7e8afd2a53063c8ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c70f029102bd0b5e762717c3889671fb.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57a76b586e289841016c49819b99559f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd0f5e152398772be9ec9555664a6407.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ee2ec7a69d7d1f401e04afd231f6515.png)
您最近一年使用:0次
名校
3 . 已知函数
,其中
.
(Ⅰ)讨论
的单调性;
(Ⅱ)当
时,证明:
;
(Ⅲ)求证:对任意正整数n,都有
(其中e≈2.7183为自然对数的底数)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa9f7cb75c5500ad56dfe0f178dedb92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.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/257810d08006d4b886331966c99767ea.png)
(Ⅲ)求证:对任意正整数n,都有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf0f4b1e329db4bf6070f993297f9b9.png)
您最近一年使用:0次
2019-01-12更新
|
4102次组卷
|
10卷引用:黑龙江省大庆实验中学2019届高三普通高等学校招生全国统一考试文科数学模拟试题
黑龙江省大庆实验中学2019届高三普通高等学校招生全国统一考试文科数学模拟试题【区级联考】天津市蓟州等部分区2019届高三上学期期末联考数学(文)试题【区级联考】天津市部分区2019届高三(上)期末数学(文科)试题【全国百强校】四川省成都市成都外国语学校2018-2019学年高二下学期期中考试文科数学试题【全国百强校】河北省武邑中学2019届高三下学期第一次模拟考试数学(文)试题江西省五市八校2019-2020学年高三第二次联考文科数学试题湖北省武汉二中2019-2020学年高二下学期4月第二次线上测试数学试题四川省宜宾市第四中学校2019-2020学年高二下学期期中考试数学(理)试题四川省宜宾市第四中学校2019-2020学年高二下学期期中考试数学(文)试题广东省佛山市三水区三水中学2019-2020学年高二下学期第二次统考数学试题
名校
4 . 对于定义域为D的函数y=f(x),如果存在区间[m,n]
D,同时满足:
①f(x)在[m,n]内是单调函数;
②当定义域是[m,n]时,f(x)的值域也是[m,n].则称[m,n]是该函数的“和谐区间”.
(1)证明:[0,1]是函数y=f(x)=x2的一个“和谐区间”.
(2)求证:函数
不存在“和谐区间”.
(3)已知:函数
(a∈R,a≠0)有“和谐区间”[m,n],当a变化时,求出n﹣m的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/637904facd16726fbfccb679e901e68a.png)
①f(x)在[m,n]内是单调函数;
②当定义域是[m,n]时,f(x)的值域也是[m,n].则称[m,n]是该函数的“和谐区间”.
(1)证明:[0,1]是函数y=f(x)=x2的一个“和谐区间”.
(2)求证:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d3b0573a4ee2c68c86feda380291faf.png)
(3)已知:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a087c10b183ee28bc5fe1faa3289074.png)
您最近一年使用:0次
2016-12-04更新
|
1243次组卷
|
8卷引用:黑龙江省大庆市第一中学2019-2020学年高一上学期第一次月考数学试题
5 . 如图,AB是圆O的直径,点C是圆O上异于A,B的点,直线PC⊥平面ABC,E,F分别是PA,PC的中点.
(1)记平面BEF与平面ABC的交线为l,试判断直线l与平面PAC的位置关系,并加以证明;
(2)设(1)中的直线l与圆O的另一个交点为D,且点Q满足
.记直线PQ与平面ABC所成的角为θ,异面直线PQ与EF所成的角为α,二面角E﹣l﹣C的大小为β.求证:sinθ=sinαsinβ.
(1)记平面BEF与平面ABC的交线为l,试判断直线l与平面PAC的位置关系,并加以证明;
(2)设(1)中的直线l与圆O的另一个交点为D,且点Q满足
![](https://img.xkw.com/dksih/QBM/2014/5/22/1571735197384704/1571735202594816/STEM/fe360ef4630f4137844de7807a4b52b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/10/29f8132e-d52b-4bb3-be15-39727acee098.png?resizew=195)
您最近一年使用:0次
2016-12-03更新
|
2770次组卷
|
4卷引用:黑龙江省大庆市让胡路区第一中学2019-2020学年高二上学期第一次月考数学(理)试题
名校
解题方法
6 . 如图,在直三棱柱
中,△
为边长为2的正三角形,
为
中点,点
在棱
上,且
.
时,求证
平面
;
(2)设
为底面
的中心,求直线
与平面
所成角的正弦值的最大值,并求取得最大值时
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/645b45818c7a7c68a772a30262277c8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38a1794201d5a18fe46cfb6901c7f0d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/441809d6ce2df21a85b390cdce9b1112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4525c00ed908bed8ba8d353e747a858.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c4c2157cf374ebe6352715ef100471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2024-06-04更新
|
631次组卷
|
2卷引用:黑龙江省大庆市实验中学实验二部2024届高三下学期得分训练数学试题(六)
7 . 已知椭圆
分别为椭圆
的左顶点和右焦点,过
作斜率不为
的直线
交椭圆
于点
,
两点,且
.当直线
轴时,
.
的方程;
(2)设直线
的斜率分别为
,问
是否为定值?并证明你的结论;
(3)直线
交
轴于点
,若过
点作直线
的平行线
交椭圆
于点
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d9a29cb4104354b51872768b232b19b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc3ea0625ef0a45f4c96c778ba484fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/165a501b2e6a3acc46212e59a166c053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9985087067ec41d8f29382b400f107e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5671fb25040a712a49e8c8148d67d300.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4757181824e15e0f21e5bdd55448783.png)
(3)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.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/a7f8f1290fdb389fc5c8b7d01020c80d.png)
您最近一年使用:0次
名校
解题方法
8 . 悬链线的原理运用于悬索桥、架空电缆、双曲拱桥、拱坝等工程.通过适当建立坐标系,悬链线可为双曲余弦函数
的图像,定义双曲正弦函数
.类比三角函数的性质:①平方关系:
,②导数关系:
.
(1)直接写出
具有的类似①、②的性质(不需要证明):
(2)证明:当
时,
;
(3)求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c2b368b26ace6c7aa1babc747110b13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a6271387d2be177a6561863df3de01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9af7ca3fcd9a43d520ed650b80ef2dad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bf160d9a666a2f63ccc608836ae6eb4.png)
(1)直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d10cbcef6d91bf8256419077870cb919.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6c9ed109add9b7aa73c974ce99b3395.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06357582880b54f0bfefe62027c9c8f0.png)
您最近一年使用:0次
9 . 过抛物线外一点
作抛物线的两条切线,切点分别为A,B,我们称
为抛物线的阿基米德三角形,弦AB与抛物线所围成的封闭图形称为相应的“囧边形”,且已知“囧边形”的面积恰为相应阿基米德三角形面积的三分之二.如图,点
是圆
上的动点,
是抛物线
的阿基米德三角形,
是抛物线
的焦点,且
.
的方程;
(2)利用题给的结论,求图中“囧边形”面积的取值范围;
(3)设
是“圆边形”的抛物线弧
上的任意一动点(异于A,B两点),过D作抛物线的切线
交阿基米德三角形的两切线边PA,PB于M,N,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b501de0a6ebd0c2f8143ac70d8b66649.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1cb81ad58dc0521d4692a0404ecad2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bf1a7bb97f1c79c3f7bf664b78c20b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
(2)利用题给的结论,求图中“囧边形”面积的取值范围;
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6833e56be18e5a0123210cbcaa0df2b.png)
您最近一年使用:0次
2024-03-29更新
|
1146次组卷
|
4卷引用:黑龙江省大庆市实验中学实验二部2023-2024学年高三下学期得分训练数学试题(四)
黑龙江省大庆市实验中学实验二部2023-2024学年高三下学期得分训练数学试题(四)重庆市第一中学校2023-2024学年高二下学期第一次月考数学试题江苏省南京航空航天大学苏州附属中学2023-2024学年高三下学期二模阳光测试数学试题(已下线)第6题 设点or设线解决阿基米德三角形问题(压轴大题)
名校
解题方法
10 . 已知函数
.
(1)当
时,求证:
①当
时,
;
②函数
有唯一极值点;
(2)若曲线
与曲线
在某公共点处的切线重合,则称该切线为
和
的“优切线”.若曲线
与曲线
存在两条互相垂直的“优切线”,求
,
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea7f41aa561904f6f2a8e6aaae348855.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f42342632cbd8e9cfbae17b76d94b033.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9e5ea144897b9b7db92726da39648f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
您最近一年使用:0次
2024-01-18更新
|
1280次组卷
|
2卷引用:黑龙江省大庆市实验中学实验二部2023-2024学年高三下学期得分训练数学试卷(一)