解题方法
1 . 已知函数
,
.
(1)讨论
的单调性;
(2)判断是否存在
,使得
的最小值为
.若存在,确定符合条件的
的个数;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9999bb8c3531465eb89996cf9d4fbb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)判断是否存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7691c512d7e7840bf1e3a4549fba2ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89db4fb79d39ee89c70fcf94b5402632.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
2 . 已知函数
.
(1)讨论函数
的单调区间与极值;
(2)若
且
恒成立,求
的最大值;
(3)在(2)的条件下,且
取得最大值时,设
,且函数
有两个零点
,求实数
的取值范围,并证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1675fb0b284b54ffda956abf1ddd5eb7.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8610232c77741a37463feba1a66c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a5b0f1ae6fb2b377c268db2c75cc633.png)
(3)在(2)的条件下,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a5b0f1ae6fb2b377c268db2c75cc633.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9998f8fe3f111c95178622a2b920bb8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46be55c8f2760d6db125f46691a3de48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b4900c67f4b57fa430c4bd863f8e896.png)
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昨日更新
|
120次组卷
|
2卷引用:四川省树德中学2016届高考适应性测试数学(文)试题(6月1日)
解题方法
3 . 罗尔
中值定理是微分学中的一条重要定理,根据它可以推出拉格朗日
中值定理和柯西
中值定理,它们被称为微分学的三大中值定理. 罗尔中值定理的描述如下:如果函数
满足三个条件①在闭区间
上的图象是连续不断的,②在开区间
内是可导函数,③
,那么在
内至少存在一点
,使得等式
成立.
(1)设方程
有一个正根
,证明:方程
必有一个小于
的正根.
(2)设函数
是定义在
上的连续且可导函数,且
.证明:对于
,方程
在
内至少有两个不同的解.
(3)设函数
.证明:函数
在区间
内至少存在一个零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/859473a3f9b5cf16025e855ce2b77de2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65ff3b05740aaa1205ead24d6d673b94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac4b248470dfe85a3eb898cf7e6762b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca6d68f1de3e70696f1d5d60affe6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63313f7ac7402fcb5a9a840db64c6f08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99f7b07c03ce2893b3b80e3949f60af6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63313f7ac7402fcb5a9a840db64c6f08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96ca67fa27370de093332deac2060ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4560ae25821eb8967afc2a1fcf04af8.png)
(1)设方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/881825ebb45b7fd43c3c54a4dd329d0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11abb76da45ffa52b47c3a6b9a03ac7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b0bcae9bf5e3e0c10a09c44bd8d103a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd14a569550ac539e72500311a38be27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f58d70ec66486b6fa33ab8cd9ef024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/519758227a60de1513b3f4226d440de4.png)
(3)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6a1443fc316a0d9478471e2deeec085.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e6a164990946169d8a195ec2733f85e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0efe3c42f37bcb7d6552fdf6261e50a.png)
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解题方法
4 . 已知不等式
(其中
)的解集中恰有三个正整数,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49718533c0a3f62fbab8b03b67076903.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
5 . 泰勒公式是一个非常重要的数学定理,它可以将一个函数在某一点处展开成无限项的多项式.当
在
处的
阶导数都存在时,它的公式表达式如下:
.注:
表示函数
在原点处的一阶导数,
表示在原点处的二阶导数,以此类推,和
表示在原点处的
阶导数.
(1)求
的泰勒公式(写到含
的项为止即可),并估算
的值(精确到小数点后三位);
(2)当
时,比较
与
的大小,并证明;
(3)设
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6368fec0c2c25db7c29b014d60270e97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90f07fcb0ae10d6d68a29552955f9587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b3ec7ada52f4850719a970aeb59ca16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/557057dab9ea3a5e42857dc305b66192.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f29b6f33826b7a6d9e5090fc0d135ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cf688908975687a9bead59e017acacc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d800f03de80068a1172beac3a2c75587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5c1ae8ac7a70fcab9a5daca65ccd99.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bd6fa900d8dd51b888c6966c7f73002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d898aa5fe63561f06ebfe8890c50576.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2433991919abb80215d7d102261f1b4.png)
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解题方法
6 . 奇函数
于
上连续,满足当
时,
,且
,若对任意使得直线
,
垂直的正数
,都有:
,则
的最大可能值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f0e9c04402a0ffdaa25c3e3c82c7dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f00d5ae5824448992e135b4d01c1754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/529c34f81a9dc555fc94c067e0c93426.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34420a997875bda783deeca0b03eec86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41f5bd4b0de28d43f0578654812009be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a64f2145f164f7a5efc3b013d186f2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
7 . 已知奇函数
及其导函数
的定义域均为
.当
时,
,则使不等式
成立的
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8de2d9ba90ee238bcda1ec591bc7b37f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b49ac5a30da41ec879c8e1a6801fd098.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee4c3872583bef56de103e4a4df05838.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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解题方法
8 .
,均有
成立,则a的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92ee48188cc8f7bfcf5d2411823204cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f338fb599dba9be924cd5de2bda278e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
9 . 设函数
在
上存在导数
,对于任意的实数
,有
,当
时,
.若
,则实数
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5d89f26363ff0c3aebcf06be7586ba1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d93eb1f0a8d7949f4e4fbde21a59c9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9dac6982486578c08f8b5d523eb7b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f76429c796353404d0d8c6e0b1bf93d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2024-07-17更新
|
649次组卷
|
4卷引用:新疆维吾尔自治区2024届高三下学期第三次适应性检测数学试题
10 . 设非常值函数
定义域为
,
,且对于任意
都满足
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc8e9fbd6e07eba2a81f31b785978b64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/180ab0153c68be69a3a54003ab733768.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0abf4985dcec3a0e1e357010aeb04d19.png)
A.![]() |
B.![]() |
C.![]() |
D.若![]() ![]() ![]() |
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