名校
解题方法
1 . 设函数
,
(其中
,
是自然对数的底数).
(1)若函数
没有零点,求实数
的取值范围;
(2)若函数
的图象有公共点
,且在点
有相同的切线,求实数
的值;
(3)若
在![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e44c45ef0334070fc149b452dee26ae5.png)
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/465c1b181a5d0d2f849340d279f3eb23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3026a05bfbad9e49d48b623d3f2e5e93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f3c2be7482719651bcf491949681e05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c0ed188d083966baaae94e6b86064f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6340098ee5268170d08ffb480baacd46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e44c45ef0334070fc149b452dee26ae5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bdfed8d6862125dc1fecfce0322a750.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2016-12-03更新
|
655次组卷
|
2卷引用:2015届江苏省扬州市高三第四次调研测试数学试卷
2 . 已知函数
满足
,且当
时,
,当
时,
的最大值为
.
(1)求实数a的值;
(2)设
,函数
,
.若对任意
,总存在
,使
,求实数b的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4ed61eb1dda1c13535446ab4ec01f10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d917efaa900ac4305a81971f1c129b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8d6ca0ed22bf1ca8072f2c83333286f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8881dfcf660d425823fe18b5b2ffd9a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c151424a9509dbf646c5da449667c6bf.png)
(1)求实数a的值;
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dc57a025dceb6eadd5e8f2dc3b2583f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2602c86f231172d579921150a24b6060.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c4c4a9a825bbc15b1473b68a77ec9fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a28684838f15d53c439ea7748dac7b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/195cf2be1f224527a18305f0279f7e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eca5c282908fef3f0481e376f42c490.png)
您最近一年使用:0次
名校
3 . 已知函数f(x)=
ax2+lnx,g(x)=-bx,其中a,b∈R,设h(x)=f(x)-g(x),
(1)若f(x)在x=
处取得极值,且f′(1)=g(-1)-2.求函数h(x)的单调区间;
(2)若a=0时,函数h(x)有两个不同的零点x1,x2
①求b的取值范围;
②求证:
>1.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eff998d034284391ca064755fa6bf1b.png)
(1)若f(x)在x=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f78c38805c09dcfbcc42103308975a74.png)
(2)若a=0时,函数h(x)有两个不同的零点x1,x2
①求b的取值范围;
②求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dc79f75852e63b8357f744ca547f000.png)
您最近一年使用:0次
2016-12-03更新
|
2570次组卷
|
6卷引用:2015届江苏高考南通密卷三数学试卷
4 . 如图,在平面直角坐标系
中,已知椭圆
:
,设
是椭圆
上的任一点,从原点
向圆
:
作两条切线,分别交椭圆于点
,
.
![](https://img.xkw.com/dksih/QBM/2015/3/21/1572019801456640/1572019807477760/STEM/705ad4f4596549078c6818dbd2ad8a75.png)
(1)若直线
,
互相垂直,求圆
的方程;
(2)若直线
,
的斜率存在,并记为
,
,求证:
;
(3)试问
是否为定值?若是,求出该值;若不是,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/277e0eae79ef5e4cb525e5200bfc4b01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3feccf154671abf1114e77c8cb03c83c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/187c7444e90d33f40944d5bebbe1e5db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://img.xkw.com/dksih/QBM/2015/3/21/1572019801456640/1572019807477760/STEM/705ad4f4596549078c6818dbd2ad8a75.png)
(1)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1511fecc764a34504b104a69562aa51.png)
(3)试问
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c2475f29f388642ac001ef7e854e0ac.png)
您最近一年使用:0次
2016-12-03更新
|
1314次组卷
|
7卷引用:2015届江苏省淮安市高三数学第一次调研测试理科数学试卷
2014·江苏南通·一模
5 . 已知函数
.
(1当
时,
与
)在定义域上单调性相反,求的
的最小值.
(2)当
时,求证:存在
,使
的三个不同的实数解
,且对任意
且
都有
.
![](https://img.xkw.com/dksih/QBM/2014/6/24/1571794857263104/1571794863235072/STEM/2dd8cf64b6904c409b0626364d3f5cde.png)
(1当
![](https://img.xkw.com/dksih/QBM/2014/6/24/1571794857263104/1571794863235072/STEM/798aad047a9344a984e27afd86bc47cb.png)
![](https://img.xkw.com/dksih/QBM/2014/6/24/1571794857263104/1571794863235072/STEM/274a5cba98ec4744a1167a37dfe6cf19.png)
![](https://img.xkw.com/dksih/QBM/2014/6/24/1571794857263104/1571794863235072/STEM/f830c331aea94ee6b130643441db9056.png)
![](https://img.xkw.com/dksih/QBM/2014/6/24/1571794857263104/1571794863235072/STEM/1500db7870d44a09ba84226c6491e1b1.png)
(2)当
![](https://img.xkw.com/dksih/QBM/2014/6/24/1571794857263104/1571794863235072/STEM/5cc8f5c33e9a4fb090452b3e9db65d61.png)
![](https://img.xkw.com/dksih/QBM/2014/6/24/1571794857263104/1571794863235072/STEM/352b57f5d3b1488e9ab698a6669e0ab7.png)
![](https://img.xkw.com/dksih/QBM/2014/6/24/1571794857263104/1571794863235072/STEM/03442e2e9a0f4202850a377cbda8c59e.png)
![](https://img.xkw.com/dksih/QBM/2014/6/24/1571794857263104/1571794863235072/STEM/019762b744684e778fca9db01dc243f2.png)
![](https://img.xkw.com/dksih/QBM/2014/6/24/1571794857263104/1571794863235072/STEM/2ad5a2a811094871810de9ed8896327f.png)
![](https://img.xkw.com/dksih/QBM/2014/6/24/1571794857263104/1571794863235072/STEM/05976cf0e61243368d3d06559327d38a.png)
![](https://img.xkw.com/dksih/QBM/2014/6/24/1571794857263104/1571794863235072/STEM/c250f4b2847643f6a9b3a121469b4bad.png)
您最近一年使用:0次
2011·江苏南通·一模
6 . 在平面直角坐标系
中,如图,已知椭圆E:
的左、右顶点分别为
、
,上、下顶点分别为
、
.设直线
的倾斜角的正弦值为
,圆
与以线段
为直径的圆关于直线
对称.
![](https://img.xkw.com/dksih/QBM/2014/5/14/1571718923476992/1571718929039360/STEM/86a5baafad724656903c2008e53f2f9d.png)
(1)求椭圆E的离心率;
(2)判断直线
与圆
的位置关系,并说明理由;
(3)若圆
的面积为
,求圆
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ec56b59d6f2654570c2b5c4fd13a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c76916c6ff302cf4fb4b6ace5bb3a95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://img.xkw.com/dksih/QBM/2014/5/14/1571718923476992/1571718929039360/STEM/86a5baafad724656903c2008e53f2f9d.png)
(1)求椭圆E的离心率;
(2)判断直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(3)若圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73d5adfe85535b699655d5ed2f3322d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
2014·江苏徐州·三模
7 . 已知函数
.
(1)当
时,求函数
的单调增区间;
(2)当
时,求函数
在区间
上的最小值;
(3)记函数
图象为曲线
,设点
,
是曲线
上不同的两点,点
为线段
的中点,过点
作
轴的垂线交曲线
于点
,试问:曲线
在点
处的切线是否平行于直线
?并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e535b9de8c75d897528ba4d3ba01be.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e10e1c43b86a8cd4360ca9b57232164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1279ef84071f5ad7c4c1681357edd84.png)
(3)记函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d2e10c17d1f90eb3719e00e8603057a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2012·江苏淮安·一模
8 . 如图,椭圆
=1(a>b>0)的上,下两个顶点为A,B,直线l:y=-2,点P是椭圆上异于点A,B的任意一点,连接AP并延长交直线l于点N,连接PB并延长交直线l于点M,设AP所在的直线的斜率为k1,BP所在的直线的斜率为k2.若椭圆的离心率为
,且过点A(0,1).
![](https://img.xkw.com/dksih/QBM/2014/3/18/1571568675348480/1571568680230912/STEM/55f3c1d7a3b949d5aef740279dcdd6f7.png)
(1)求k1·k2的值;
(2)求MN的最小值;
(3)随着点P的变化,以MN为直径的圆是否恒过定点?若过定点,求出该定点;如不过定点,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/199f454cb22c34dfa82798ebd6c9054c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://img.xkw.com/dksih/QBM/2014/3/18/1571568675348480/1571568680230912/STEM/55f3c1d7a3b949d5aef740279dcdd6f7.png)
(1)求k1·k2的值;
(2)求MN的最小值;
(3)随着点P的变化,以MN为直径的圆是否恒过定点?若过定点,求出该定点;如不过定点,请说明理由.
您最近一年使用:0次
2011·江苏·一模
解题方法
9 . 已知函数
,
,
,
.
(1)求函数
在点
处的切线方程;
(2)若
在区间
上恒成立,求
的取值范围;
(3)当
时,求证:在区间
上,满足
恒成立的函数
有无穷多个.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58bfecd54416e2e0366376999e752915.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a2216be8742c0fcd67c8185a255aa7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a7c6915d8302ea5c84ed1d5e14ef42e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76c4f8e8106a49b3a3b60810076989dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5d6243e93c41978871cb23d8e66148d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51947e18ac12b186aa3c09e62c036af9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5d6243e93c41978871cb23d8e66148d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc40a37a51ff1dbff3bf0ff2e0adf7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
您最近一年使用:0次
11-12高三上·江苏扬州·开学考试
名校
10 . 已知函数
(
是自然对数的底数).
(1)若曲线
在
处的切线也是抛物线
的切线,求
的值;
(2)若对于任意
恒成立,试确定实数
的取值范围;
(3)当
时,是否存在
,使曲线
在点
处的切线斜率与
在
上的最小值相等?若存在,求符合条件的
的个数;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/2011/9/7/1570305343266816/1570305348526080/STEM/b74063810e8f4b34ae6f652717618738.png?resizew=189)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a67a65dbe9b0fa39abdf30db6c76392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c891ad0fbe5235b0456db275a23d1951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e74c764868956c34970ff08a8b978d3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16b26c238a3028a6403b56726435cac6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11abb76da45ffa52b47c3a6b9a03ac7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
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2016-12-01更新
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4卷引用:2012届江苏省扬州市安宜高级中学高三上学期期初测试数学
(已下线)2012届江苏省扬州市安宜高级中学高三上学期期初测试数学2020届江苏省南京市高三下学期5月模拟考试数学试题江苏省南通市2019-2020学年高三上学期开学模拟考试数学试题重庆市渝北中学2024届高三上学期7月月考数学试题