1 . 对于定义域为D的函数
,如果存在区间
,同时满足:①
在
内是单调函数;②当定义域是
时,
的值域也是
.则称
是该函数的“和谐区间”.
(1)证明:
是函数
=
的一个“和谐区间”.
(2)求证:函数
不存在“和谐区间”.
(3)已知:函数
(
R,
)有“和谐区间”
,当
变化时,求出
的最大值.
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/85788af6b4a64af49a2488b14790cbc4.png)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/0c9cc65ece4c41f7932a390bb4a491c1.png)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/86162c78c4b144bc89a2c748a040b308.png)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/5bfa40ca62b848a4b0515b76807276ec.png)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/5bfa40ca62b848a4b0515b76807276ec.png)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/86162c78c4b144bc89a2c748a040b308.png)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/5bfa40ca62b848a4b0515b76807276ec.png)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/5bfa40ca62b848a4b0515b76807276ec.png)
(1)证明:
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/f237254e258b4ec281e12610b5d7e5ab.png)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/85788af6b4a64af49a2488b14790cbc4.png)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/63c0d3e3823644e5bbe2efe41ffe1590.png)
(2)求证:函数
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/860a31536a6b4cbba385cb94a18d53cf.png)
(3)已知:函数
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/903023ddba954478acf160b661848db1.png)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/80ca0bb0234f4b819f857dd8814e6fa2.png)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/5b6cb3b1916a44acbeee023fcd25fee7.png)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/5bfa40ca62b848a4b0515b76807276ec.png)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/931f1a47f3fd41e6bd63d40181e59177.png)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/036270e93bff4c29880b98c7701723d3.png)
您最近一年使用:0次
2 . 在正三棱柱
中,点
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/12/90ac46e4-a6d2-4335-bd1e-e9a7a90e085d.png?resizew=155)
(1)求证:
//面
;
(2)设
是棱
上的点,且满足
.求证:面
面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/12/90ac46e4-a6d2-4335-bd1e-e9a7a90e085d.png?resizew=155)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5888bec948373f3854258ad80171073d.png)
(2)设
![](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/5ed990271713e2d0ee431ce152f0b6d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0fe22d526d1da4d61436c59e7517328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3653ada76ba0c8afe9d57c8e7832c6ed.png)
您最近一年使用:0次
2018-02-28更新
|
616次组卷
|
5卷引用:2017届江苏扬州中学等七校高三上期中联考数学试卷
3 . 如图,在三棱柱ABCA1B1C1中,D,E分别为A1C1,BB1的中点,B1C⊥AB,侧面BCC1B1为菱形.求证:
![](https://img.xkw.com/dksih/QBM/2016/1/21/1572461198950400/1572461204938752/STEM/bbaa248f4fed448892fcf5d6afb37e5f.png)
(Ⅰ)DE∥平面ABC1;
(Ⅱ)B1C⊥DE.
![](https://img.xkw.com/dksih/QBM/2016/1/21/1572461198950400/1572461204938752/STEM/bbaa248f4fed448892fcf5d6afb37e5f.png)
(Ⅰ)DE∥平面ABC1;
(Ⅱ)B1C⊥DE.
您最近一年使用:0次
解题方法
4 . 已知函数
为偶函数,关于
的方程
的构成集合
.
(1)求![](https://img.xkw.com/dksih/QBM/2016/1/13/1572435229065216/1572435234832384/STEM/a4f8d8bbb3374c1eb7aaf74559fe7284.png)
的值;
(2)若
,求证:
;
(3)设
,若存在实数
使得
,求实数
的取值范围.
![](https://img.xkw.com/dksih/QBM/2016/1/13/1572435229065216/1572435234832384/STEM/959a0af83a4b4114b38e57fec4e6834e.png)
![](https://img.xkw.com/dksih/QBM/2016/1/13/1572435229065216/1572435234832384/STEM/3a3e422d07824b33a44f2c4586bcfb7b.png)
![](https://img.xkw.com/dksih/QBM/2016/1/13/1572435229065216/1572435234832384/STEM/e71521fa88aa4da585c7b7f2483a3ae8.png)
![](https://img.xkw.com/dksih/QBM/2016/1/13/1572435229065216/1572435234832384/STEM/67062d53a2434f53bf4eeea8a4f519a5.png)
(1)求
![](https://img.xkw.com/dksih/QBM/2016/1/13/1572435229065216/1572435234832384/STEM/a4f8d8bbb3374c1eb7aaf74559fe7284.png)
![](https://img.xkw.com/dksih/QBM/2016/1/13/1572435229065216/1572435234832384/STEM/9327cadd37b24f3e99f49cb270777bdf.png)
(2)若
![](https://img.xkw.com/dksih/QBM/2016/1/13/1572435229065216/1572435234832384/STEM/b8927464ad0e4c3bba6e8c2464a22179.png)
![](https://img.xkw.com/dksih/QBM/2016/1/13/1572435229065216/1572435234832384/STEM/48454cc5a0cd4956a9c788529e34727c.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47f0c4c7714099b5bafdb35d7ca146c8.png)
![](https://img.xkw.com/dksih/QBM/2016/1/13/1572435229065216/1572435234832384/STEM/f3a8c6ecbd554aea86d405d279415fe0.png)
![](https://img.xkw.com/dksih/QBM/2016/1/13/1572435229065216/1572435234832384/STEM/e73b7562ec07461db83271fe7bdd975c.png)
![](https://img.xkw.com/dksih/QBM/2016/1/13/1572435229065216/1572435234832384/STEM/5042f0287e4f4621be80c7f859834a9b.png)
您最近一年使用:0次
2013·江苏淮安·二模
名校
解题方法
5 . 已知
展开式的各项依次记为
.设函数
.
(1)若
的系数依次成等差数列,求正整数
的值;
(2)求证:
,恒有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7506bbf15ca5a2b36bba7e46f32df84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82fc6513cbb3680c97b6a52dcd17fd51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2951e58ef2f1f504bdb71bdee770bff8.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/909623749d94e2ce3f8873edab20e6d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18fe74b9c8adc168f21a36951d8711d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c9c39fa72f7a96bb1d24a5099ab933f.png)
您最近一年使用:0次
2016-12-04更新
|
570次组卷
|
8卷引用:2016届江苏省扬州中学高三上学期12月月考数学试卷
2016届江苏省扬州中学高三上学期12月月考数学试卷2016届上海市南洋模范中学高三5月三模数学试题(已下线)2013届江苏省淮安市清江附中高三第二次调研测试数学试卷江苏省2018年高考冲刺预测卷一数学专题11.2 二项式定理(练)-江苏版《2020年高考一轮复习讲练测》(已下线)第03讲 二项式定理(核心考点讲与练)-2021-2022学年高二数学下学期考试满分全攻略(人教A版2019选修第二册+第三册)(已下线)专题20 计数原理(模拟练)江苏省徐州市睢宁县第一中学2021-2022学年高二3月学情检测数学试题
解题方法
6 . 如图,在五面体
中,四边形
是平行四边形.
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572664178180096/1572664183767040/STEM/70fd1e4654fd459e943d872f9722a504.png?resizew=214)
(1)若
,
,求证:平面
平面
;
(2)求证:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572664178180096/1572664183767040/STEM/70fd1e4654fd459e943d872f9722a504.png?resizew=214)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34c23e376ab222814e0029d2adb5a957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7bd02e0adeae92ba9526261b1baf797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a5628323a7eeb11213df5c9048b3543.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06222ee533c2484ab25321a6abbf98cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
7 . 椭圆![](https://img.xkw.com/dksih/QBM/2016/4/29/1572609942790144/1572609948737536/STEM/91b8918868de420681c278def47b0e6d.png)
经过点
,且离心率为
,过点
的动直线
与椭圆相交于
两点.
![](https://img.xkw.com/dksih/QBM/2016/4/29/1572609942790144/1572609948737536/STEM/ccc0e50bc78640c4905a008af18904bd.png)
(1)求椭圆
的方程;
(2)若椭圆
的右焦点是
,其右准线与
轴交于点
,直线
的斜率为
,直线
的斜率为
,求证:
;
(3) 设点
是椭圆
的长轴上某一点(不为长轴顶点及坐标原点),是否存在与点
不同的定点
,使得
恒成立?若存在,求出点
的坐标;若不存在,说明理由.
![](https://img.xkw.com/dksih/QBM/2016/4/29/1572609942790144/1572609948737536/STEM/91b8918868de420681c278def47b0e6d.png)
![](https://img.xkw.com/dksih/QBM/2016/4/29/1572609942790144/1572609948737536/STEM/3c1a425d07eb41038b2fc3c4507a11be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7167b1f25e38b061b3a234bf4d569a8.png)
![](https://img.xkw.com/dksih/QBM/2016/4/29/1572609942790144/1572609948737536/STEM/d8f1b62224424b8987ac502cd80e2f9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/2016/4/29/1572609942790144/1572609948737536/STEM/642f7e0ed5d047a088268c1dd24193ed.png)
![](https://img.xkw.com/dksih/QBM/2016/4/29/1572609942790144/1572609948737536/STEM/3a4fe4e609f5400f8722233f91321456.png)
![](https://img.xkw.com/dksih/QBM/2016/4/29/1572609942790144/1572609948737536/STEM/ccc0e50bc78640c4905a008af18904bd.png)
(1)求椭圆
![](https://img.xkw.com/dksih/QBM/2016/4/29/1572609942790144/1572609948737536/STEM/3915f17350b64c879df3e778b56249d1.png)
(2)若椭圆
![](https://img.xkw.com/dksih/QBM/2016/4/29/1572609942790144/1572609948737536/STEM/3915f17350b64c879df3e778b56249d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83d200a411fbc2f50ad72f1fd729a7d7.png)
(3) 设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e1177b9aa8e43baf572b7bf5fedbbf4.png)
![](https://img.xkw.com/dksih/QBM/2016/4/29/1572609942790144/1572609948737536/STEM/3915f17350b64c879df3e778b56249d1.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/1057b27f5db05ea8b62d9ec5e560c3f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
您最近一年使用:0次
名校
8 . 如图,曲线
由两个椭圆
:
和椭圆
:
组成,当
成等比数列时,称曲线
为“猫眼曲线”.若猫眼曲线
过点
,且
的公比为
.
(1)求猫眼曲线
的方程;
(2)任作斜率为
且不过原点的直线与该曲线相交,交椭圆
所得弦的中点为
,交椭圆
所得弦的中点为
,求证:
为与
无关的定值;
(3)若斜率为
的直线
为椭圆
的切线,且交椭圆
于点
,
为椭圆
上的任意一点(点
与点
不重合),求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e9a724b59c890095baa5cb73e267c44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9275bd8ce17fcc4a786510b008414ab0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7ee99a377f4a56d87bd0bd339b06f46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5bf357372be886aa8d7a74f6e8ad12b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
(1)求猫眼曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
(2)任作斜率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2799abb64fd7bfce9dfa7228aa460564.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e9a724b59c890095baa5cb73e267c44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9275bd8ce17fcc4a786510b008414ab0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/982036e5ed63ecfe32431e6bdb3a5f18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)若斜率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9275bd8ce17fcc4a786510b008414ab0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e9a724b59c890095baa5cb73e267c44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e9a724b59c890095baa5cb73e267c44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f7ad41b36674fd6e90176ee24cdefbb.png)
![](https://img.xkw.com/dksih/QBM/2019/4/17/2184482939838464/2185026852659200/STEM/106efa03eb0345ff9e5ffb0a397e3f0a.png?resizew=316)
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2016-12-04更新
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523次组卷
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2卷引用:2016届江苏省扬州中学高三3月质量检测数学试卷
9 . 如图,已知直三棱柱ABC﹣A1B1C1中,AB=AC,D、E分别为BC、CC1中点,BC1⊥B1D.
![](https://img.xkw.com/dksih/QBM/2018/1/6/1854395288797184/1855482396852224/STEM/418ad2d67aba4e20958966d1058bd307.png?resizew=166)
(1)求证:DE∥平面ABC1;
(2)求证:平面AB1D⊥平面ABC1.
![](https://img.xkw.com/dksih/QBM/2018/1/6/1854395288797184/1855482396852224/STEM/418ad2d67aba4e20958966d1058bd307.png?resizew=166)
(1)求证:DE∥平面ABC1;
(2)求证:平面AB1D⊥平面ABC1.
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解题方法
10 . 如图,在平面直角坐标系xoy中,椭圆E:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
的离心率为
,直线l:
与椭圆E相交于A,B两点,
,C,D是椭圆E上异于A,B两点,且直线AC,BD相交于点M,直线AD,BC相交于点N.
![](https://img.xkw.com/dksih/QBM/2016/1/18/1572442262896640/1572442268729344/STEM/8791d6f01b9646e480be35bdb98e4034.png?resizew=232)
(1)求a,b的值;
(2)求证:直线MN的斜率为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
的离心率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d585d2d6643471640905d234d9538c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9620e97567191461f1a87aebb7b4f69.png)
![](https://img.xkw.com/dksih/QBM/2016/1/18/1572442262896640/1572442268729344/STEM/8791d6f01b9646e480be35bdb98e4034.png?resizew=232)
(1)求a,b的值;
(2)求证:直线MN的斜率为定值.
您最近一年使用:0次