1 . 已知函数
满足
,若方程
有五个不相等的实数根,则实数
的取值范围为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57e0c60634c196f45c518c3f306198ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d5becfc631cad14d609c6bd95d8834d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2022-01-16更新
|
1921次组卷
|
6卷引用:福建省长汀县第一中学2021-2022学年高一上学期第二次月考数学试题
2021高二·江苏·专题练习
2 . 若
,
,
,对任意
,总存在唯一的
,使得
成立,则实数a的取值范围____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0892c1433dd7d9fc164548e87278046d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08713253cdb10b55486c7fdff168577a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81efa4a3fd5330631243236744d6143a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82c99f02da3bc1f7c1675b1009f90947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e63bbadc6250f7139836ede33205550.png)
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2021·全国·模拟预测
名校
解题方法
3 . 设函数
.
(1)求函数
的单调区间;
(2)若函数
有两个不同的零点
,
,
为
的导函数,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98452a45746410926fa3ab006338854e.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13e737b076dbc720db3030a7efb84e8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffd888afdcfdb3e91a157d50f65e915e.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/b8b91118c18ef731302a7a54f33702bf.png)
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名校
解题方法
4 . 椭圆
:
的焦点
,
是等轴双曲线
:
的顶点,若椭圆
与双曲线
的一个交点是P,
的周长为
.
(1)求椭圆
的标准方程;
(2)点M是双曲线
上任意不同于其顶点的动点,设直线
、
的斜率分别为
,
,求证
,
的乘积为定值;
(3)过点
任作一动直线l交椭圆
与A,B两点,记
,若在直线AB上取一点R,使得
,试判断当直线l运动是,点R是否在某一定直线上运动?若是,求出该直线的方程;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28bf5b6dc0c77f6415940756380933f7.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/33d776753746914c2410a3946c357f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1734bef717187708351c1be3bd035071.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)点M是双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b67528f875a6d4bac8bbf784f7b66a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/183b6a0cef4256c9696a5bca31053da5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
(3)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c397129dacf0871ab2db37e60560f4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e011e14df352fcd5dad60eaf71efb4b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ffd2ff2036eddcdee3aa1c14f7a7e77.png)
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解题方法
5 . 设函数
,其中
.
(1)当
,
时,求证:
;
(2)若
为
的极值点,且
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7523770dc4b9e44183a7b3dc2e9cbad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0aa2ef928b6e3341d0a0dc6d8055b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36d71f015144ffaf1faec94a259b4a06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77cbaa7e55d776be06b790b6e4206946.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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6 . 椭圆
经过点
,其右焦点为抛物线
的焦点
;直线
与椭圆
交于
,
两点,且以
为直径的圆过原点.
![](https://img.xkw.com/dksih/QBM/2021/11/6/2845039716614144/2847497667117056/STEM/ee9515db-39ec-4d22-989a-c010bb3ae361.png?resizew=299)
(1)求椭圆
的方程;
(2)若过原点的直线
与椭圆
交于
两点,且
,求四边形
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd486b8796b3454eab219c28ed131683.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc899dac7a2bf6112ca7d7d474eaff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b36df9887ae94b7f1fe112ad43e9ddc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.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://img.xkw.com/dksih/QBM/2021/11/6/2845039716614144/2847497667117056/STEM/ee9515db-39ec-4d22-989a-c010bb3ae361.png?resizew=299)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)若过原点的直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8069c40eae9104a798c2334b1b91bf06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c593ebdb2f1934a0cb56f8c44f454f8.png)
您最近一年使用:0次
7 . 已知a>0,函数f(x)=2eax﹣x,若函数
恰有两个零点,则实数a的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84e1757c1276f928619c9378259a5b9d.png)
A.[![]() ![]() | B.(0,![]() | C.(0,![]() | D.[![]() ![]() |
您最近一年使用:0次
8 . 求最大的实数
,使得不等式
对任意正整数
以及任意实数
均成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2865bd92f42e2010f43ad17f5775fbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3979f4e3d834034bc48715afbb8f70c8.png)
您最近一年使用:0次
9 . 给定素数
.称1,2,…,
的排列
为“好排列”,如果对
,2,…,
均有
,并且
是
的倍数.求“好排列”的个数除以
的余数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20dd7cdef44777d41d74d699ffdd746d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85bbd4a74fa01b02d4604bf44e361089.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5095a28bb1b91bf6bed9e2cfbd76bb18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/175f3b6bd24295b2c60359318eaa4c03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e82c656aebb258b9b13459640a4ef99b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e839b03cd6ea4e9a2853344db2535a5.png)
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