名校
1 . 关于函数
有下列结论:
(1)函数
存在最小值但没有最大值;
(2)函数
存在两个零点,且两个零点的和小于1;
(3)函数
存在唯一的极小值点
,且
;
(4)函数
存在唯一的极大值点
,且
.
其中正确的是__________ .(填写所有正确结论的编号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2db29e99cb06dfd0d9dbdd3a0d387fd.png)
(1)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caae75ee744fa4662f1dc8fbe3995789.png)
(4)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f803d4aab3143f9e43d7a024aab305e9.png)
其中正确的是
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2 . 已知函数
,给出以下说法:
①当
时,
有三个零点:②过
的直线与
和
都相切,则
;
③若
,则
;④
的图象的对称中心为
.
其中说法正确的有________ .(填写所有正确说法的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78c26ca70f2598f34885b61eac85e010.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7b3a98af50d483a66026b8179e93c6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b2c84e7b41a841a230ed5f8a42309aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/344ccbf79da6ad7e3709d6fa72efb756.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e0b28126fc71f25ea7e92be595b26f3.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49d8d4a04bcba8f18260d0018383824f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2a51944c720568f35d443589dfc1aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/859f10c0e95f7ae1e975e33d123a28e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dc085f908df6ac3702da90e091eb20e.png)
其中说法正确的有
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名校
解题方法
3 . 下列关于函数
的判断正确的是___________ (填写所有正确的序号).
①
的解集是
;②
是极小值,
是极大值;③
没有最小值,有最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eec63a39bdb95603fb86a07889a43b7.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e3675b91a7bdeed64e0d5b7aab2e617.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7fe45ecd5d507adc2e7ffc1b1755856.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb71ad742b421a7ba62d8c1923d33358.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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4 . 已知函数
的定义域为
,其导函数为
,且满足
,
,若
,且
.给出以下不等式:
①
;
②
;
③
;
④
.
其中正确的有___________ .(填写所有正确的不等式的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c9eca1510647f9b40cf7ce69c3757f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90d3e854c20afcc64563d73509d7fec1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf81a4a39b4e2df4d05dc3b2fcc28150.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31d900314efb0e4cacb6e5de945b5397.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec9dfcf14375629c84b688a2676dcba1.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4240b3f95b81bb26488fedff54637634.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0fa3106f981611b33e2872f5967ffec.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceccfc629ea5bb0d51036eb22fd2ec14.png)
其中正确的有
您最近一年使用:0次
2021-04-04更新
|
904次组卷
|
4卷引用:天一大联考2020-2021学年高中毕业班阶段测试五理科数学试题
5 . 据历史记载,美日在中途岛(Midway)海战前,美方截获了日方密码电报,据美方已破译的密码得知,日方将向某岛进行军事活动,但关键含有地点的部分却被日方换成了另一种密码.经专家研究,估计是一种密匙密码,且密匙为3位.所谓密匙密码是指:将一段英文字母的明文(未加密前原文)经过对某一组数字(即密匙)的变换,改变成了另一组英文字母成为密文(加密后的文字)例如:明文:
(不计空格,不计大小写)在密匙为:1 9 2的条件下,变换过程如下图所示:
则密文为:
,试根据上面信息回答下面问题:
(1)在密匙为111的条件下,填写下表,并写出密文;
密文____________________.
(2)若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e15de042ebf4d454a087d9d7245b0b2.png)
请填写下表,并写出密匙;
密匙为_____________.
(3)若下面即是那段包含地点(Midway)的破译不出的密文:
,且此段密文也是3位密匙加密,试填写下表,写出密匙,并将此段密文翻译成明文.(不必证明,写出明文即可)
密匙为___________,明文为_________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e1199c50aa9f4377250cb26bc3724e0.png)
s | t | u | d | e | n | t |
1 | 9 | 2 | 1 | 9 | 2 | 1 |
t | c | w | e | n | p | u |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4ce1ed5abff05c5609344896eac946f.png)
(1)在密匙为111的条件下,填写下表,并写出密文;
s | t | u | d | e | n | t |
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e15de042ebf4d454a087d9d7245b0b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70ab9a53020088b09879ececa7bee1ad.png)
s | t | u | d | e | n | t |
(3)若下面即是那段包含地点(Midway)的破译不出的密文:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c1be7cf9cfde23043448eabb187e10c.png)
c | w | b | c | f | s | o | l | l | y | d | g |
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6 . 若曲线
与直线
满足:①
与
在某点
处相切;②曲线
在
附近位于直线
的异侧,则称曲线
与直线
“切过”.下列曲线和直线中,“切过”的有________ .(填写相应的编号)
①
与
②
与
③
与
④
与
⑤
与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c904567c3b3734e1eca8d042ef7a7b2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2a7df955fc17e92fd86302f8c34664a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e87eb1e1d03a9510780e74722a232ab5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c3d2ff5ee566fcc1b69c65712a661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f2eff609c6043c2a89a6dd163fe2244.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ab466aedd6e176088d8dee7bc3e3aaa.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b9643da0c0fea4f099f9a9133d6076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fffa8ddcbbe89ab0f250f56673e2d36c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
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7 . 已知
.
(1)求
的极值;
(2)画出函数
的大致图象;(注意:需要说明函数图象的变化趋势)
(3)若函数
至多有一个零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f0c7ebf02ecb75a6f98d39085a8dbb8.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(2)画出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc3d930126d2025a5242a192cf414b4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
解题方法
8 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95ba70b48aedfd52e2443e3bdcfbdf7e.png)
的单调性,并求出
的极值;
(2)在给定的直角坐标系中画出函数
的大致图像;
(3)讨论关于x的方程
的实根个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95ba70b48aedfd52e2443e3bdcfbdf7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)在给定的直角坐标系中画出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(3)讨论关于x的方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/402e9bf444e2bf618b52b27fd9945354.png)
您最近一年使用:0次
2022-07-07更新
|
715次组卷
|
6卷引用:广东省广州市越秀区2021-2022学年高二下学期期末数学试题
9 . 已知函数
在
处的切线l.
(2)在同一坐标系下画出
的图象,以及切线l的图象;
(3)经过点
作
的切线,共有___________条.(填空只需写出答案)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d8f8f1c47e643c51225fb48b2fac810.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
(2)在同一坐标系下画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d8f8f1c47e643c51225fb48b2fac810.png)
(3)经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19a20a61d384b658080b92d8c1a9e7c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d8f8f1c47e643c51225fb48b2fac810.png)
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