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1 . 已知函数
.
(1)当
时:
①解关于
的不等式
;
②证明:
;
(2)若函数
恰有三个不同的零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cca766a161f9438aef446b1beb7de3c4.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200f24e682c93e02a87f3f9d57dc5d40.png)
①解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
②证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37d80a96345f600468f0efb316ccd586.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1048afd2ea59732a2119a2863ed77b2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2022-01-11更新
|
1233次组卷
|
4卷引用:中学生标准学术能力诊断性测试2021-2022学年高三上学期1月月考数学试题
2 . 已知函数
.
(1)解关于
的不等式:
;
(2)当
时,过点
是否存在函数
图象的切线?若存在,有多少条?若不存在,说明理由;
(3)若
是使
恒成立的最小值,试比较
与
的大小(
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/158e629d5227dd15de9da05f5a6aa751.png)
(1)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18a822a5d7d8e596e41466e6ba3f74a7.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5030685d4bfdaba51d78d4678f3e101c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2a6b3b128b4bce79a63cea8869b12f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c53f9f1ec37560c23829d6da6d3996a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff883ef65b7078d86da530bc80173610.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/321fb1302b7fc326afe47b49d2a4309f.png)
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解题方法
3 . 给出定义:设
是函数
的导函数,
是函数
的导函数,若方程
有实数解
,则称
)为函数
的“拐点”.
(1)经研究发现所有的三次函数
都有“拐点”,且该“拐点”也是函数
的图象的对称中心.已知函数
的图象的对称中心为
,讨论函数
的单调性并求极值.
(2)已知函数
,其中
.
(i)求
的拐点;
(ii)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aac282e92da3691942a6ba8511de2303.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc581690f1d82133bb5fed3d7f365f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11abb76da45ffa52b47c3a6b9a03ac7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/408b5fe83aaebc38dad12ce4078e92e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(1)经研究发现所有的三次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75044e0301ef9def5c1a1c8e6f2cba77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc8cd0533cd510418a9e367d2045ed2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da77290fb789fc7addf96dcc72a3f851.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52f18b54d3f22c0f4cf5d5ce0a968c1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
(i)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(ii)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd9ce9991b7db23119c4edac0dc42afa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a8695cb53f51d16e2c0adbdfe029a2.png)
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2024-02-21更新
|
633次组卷
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4卷引用:云南师范大学附属中学2023-2024学年高二下学期开学考试数学试卷
2024·全国·模拟预测
解题方法
4 . 已知函数
.
(1)
对任意
恒成立,求
的取值范围;
(2)
有两个解
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ec621b7f5239efda8b254704a08bf80.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb8800c695cb799480fe1eb3859868e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/decdf669873cb75ed1d30778025ec19a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/629863a2122b0723a76debbafd722a47.png)
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名校
解题方法
5 . 已知:函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71ad23c0ef2d67af4844df5175b41ff1.png)
(1)求
的单调区间和极值;
(2)证明:
;(参考数据:
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0891a54fcf7ccbd9e6b8680944bc580d.png)
(3)若不等式
的解集中恰有三个整数解,求实数
的取值范围.(三问直接写出答案,不需要详细解答,参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71ad23c0ef2d67af4844df5175b41ff1.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd2cd53f618f890b0711f833ecff7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a80d0cbe26bbac441eceb3e71a29010e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0891a54fcf7ccbd9e6b8680944bc580d.png)
(3)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02f0eb2dcdd8c486c0f3e0856e2e02a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7722e21105bd9b5610506279805ba53c.png)
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6 .
,
,
,
.
(1)若
,
,证明:
;
(2)是否存在
使
有且仅有一组解,若存在,求
取值集合;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/311497849126f1aaf1da0ec75602eabf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1b47e7bf02b3ca16f7d96b9369e51a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827539d066d1b78e7ef8bc1569864971.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1d8dd468001ea242740bb8c5f856be6.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500d68f2678989a5ce7431cfd51b019d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9af95ad20782fcada4536afb1a165df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6847399802c7180aad234ac11a761e74.png)
(2)是否存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e1c4de9c4389bc1abf1d7253157d8f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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解题方法
7 . 已知函数
.
(1)若
,求方程
的解;
(2)若
有两个零点且有两个极值点,记两个极值点为
,求
的取值范围并证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b6fcc141688e104bfeba4b866d7873e.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86b92b70365c63607daecdc8deb73ecf.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9694eaaa274ed8e3774a100aff5f101.png)
您最近一年使用:0次
2023-03-26更新
|
1595次组卷
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5卷引用:浙江省温州市普通高中2023届高三下学期3月第二次适应性考试数学试题
浙江省温州市普通高中2023届高三下学期3月第二次适应性考试数学试题(已下线)专题07 导数(已下线)专题06 函数与导数(已下线)专题19 押全国卷(理科)第21题 导数福建省三明市优质高中校2022-2023学年高二下学期期中联考数学试题
名校
8 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d4e6107be46de0bb91fcecb65b9ee2a.png)
(1)若1是
的极值点,求a的值;
(2)求
的单调区间:
(3) 已知
有两个解
,
(i)直接写出a的取值范围;(无需过程)
(ii)λ为正实数,若对于符合题意的任意
,当
时都有
,求λ的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d4e6107be46de0bb91fcecb65b9ee2a.png)
(1)若1是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3) 已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1df628874faa615d0cf49e38c6b9968a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca579894dad67bc82cb715fd48e0d70.png)
(i)直接写出a的取值范围;(无需过程)
(ii)λ为正实数,若对于符合题意的任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9df7ea8007570536864a5cf4b00a8d2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dafb39935a3b8eee7b2529063ab3fda6.png)
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2022-10-30更新
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7卷引用:北京市第十一中学实验学校2023届高三上学期10月月考数学试题
名校
解题方法
9 . 已知函数
.
(1)求函数
的最小值;
(2)若方程
有两实数解
,求证:
.(其中
为自然对数的底数).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40ab948e5df77b57035f6b2717700858.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e409849c921f4868c5a78abffb9f74bb.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d297da393c2035fd4184db3ddcf5eac4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef5ee58a4983da76e7c34675d3da3451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fa9b12852f286c2d26734a31b3b08c8.png)
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2022-05-25更新
|
1964次组卷
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4卷引用:浙江省温州中学2022届高三下学期5月模拟数学试题
2022高三·全国·专题练习
10 . 已知函数
,其中
为常数.
(1)若
恰有一个解,求
的值;
(2)
若函数
,其中
为常数,试判断函数
的单调性;
若
恰有两个零点
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc22530e49ee89ffa24e7b57de85558.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3047d4ab078dafc06c047bcbf0a6ffaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a076165bc5557f778b9dbd9dd955708.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432db448bb03d979c52b2ed4de003e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e988d3aefa4c72cfc837f3707e1c69b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b916df8bdd03ba4a31c0b8470d13436.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfbf675ac1c5292db9f88fb58450381d.png)
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