解题方法
1 . 已知
,其中a∈R.
(1)讨论f(x)的极值点的个数;
(2)当n∈N*时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31b42a6c23faa1bb7f831e67e0159892.png)
(1)讨论f(x)的极值点的个数;
(2)当n∈N*时,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac4c25b7dfd0abd1debbaf4be097f25.png)
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2020-10-16更新
|
517次组卷
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2卷引用:江苏省徐州市市区部分学校2020-2021学年高三上学期9月学情调研考试数学试题
名校
2 . 已知函数
.
(1)求证:
有且仅有2个零点;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b6455627b11abd2e73577e254cd383e.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cb44fbeaa02d6063a725af4b76b6a3f.png)
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2020-07-23更新
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604次组卷
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2卷引用:山东省2020届高考压轴模拟考试数学试题
3 . 设
,函数
.
(1)若
无零点,求实数
的取值范围;
(2)当
时,关于
的方程
在
上恰有两个不相等的实数根,求实数
的取值范围;
(3)求证:当
,
时
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b96f3f5c1b634412a7ef0bb584528e2.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bde628fdf0627bb2881ead87ba92c77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b448fe164c2c2931805e3b3847dcdd75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(3)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c18ea81beac4bfbe312b9f67a130176.png)
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2020-04-17更新
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394次组卷
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2卷引用:2020届山东省潍坊市临朐县高三综合模拟考试数学试题(二)
4 . 函数
,曲线
在点
处的切线在
轴上的截距为
.
(1)求
;
(2)讨论
的单调性;
(3)设
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32246ca8f7819ff924c204251f4794db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a41354372ccb7c514380a0b70d97aa08.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac2fa0b457b0d62771b103c9f2db75e0.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75369db7afe5feec5c95e960136cbf3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9aeaed02b5fa345d6253296cd3c1d79.png)
您最近一年使用:0次
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解题方法
5 . 已知数列
中,
,其前
项的和为
,且当
时,满足
.
(1)求证:数列
是等差数列;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c154da7ed535cfd1edf19bc6d907ae.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8050391385b496e9c059201e4f12600a.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd74d291484f4da59ac2149d2ec135c.png)
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2019-12-01更新
|
1846次组卷
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7卷引用:山东省菏泽第一中学老校区2019-2020学年高三12月月考数学试题
12-13高三上·山东聊城·阶段练习
6 . 已知数列{an}的前n项和为 Sn
(n∈N*),且a1=2.数列{bn}满足b1=0,b2=2,
,n=2,3,….
(Ⅰ)求数列 {an} 的通项公式;
(Ⅱ)求数列 {bn} 的通项公式;
(Ⅲ)证明:对于 n∈N*,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e65f29cdfbf4b8cd002e0e0a752306.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb477cb4fd6db76606a6f85150a661b6.png)
(Ⅰ)求数列 {an} 的通项公式;
(Ⅱ)求数列 {bn} 的通项公式;
(Ⅲ)证明:对于 n∈N*,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a0f974ab5c330487609651c35c9927f.png)
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