解题方法
1 . 已知函数f(x)=
是定义在(-∞,+∞)上的奇函数,且
=
.
(1)求函数f(x)的解析式;
(2)判断f(x)在(-1,1)上的单调性,并且证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de76fff9e2b6ea1733028eb6bf4a650b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/363235991d29ba4a7ada1953da757d94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d33adb74906403b0b00fcbd9fa691d8b.png)
(1)求函数f(x)的解析式;
(2)判断f(x)在(-1,1)上的单调性,并且证明你的结论.
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名校
2 . 已知定义在区间
上的函数
,其中常数
.
(1)若函数
分别在区间
上单调,试求
的取值范围;
(2)当
时,方程
有四个不相等的实根
.
①证明:
;
②是否存在实数
,使得函数
在区间
单调,且
的取值范围为
,若存在,求出
的取值范围;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c9eca1510647f9b40cf7ce69c3757f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26337502f8a07b4655416be99c2c09b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fff6e7e2b9f2b68b1647f6350b98dc8.png)
(1)若函数
![](https://img.xkw.com/dksih/QBM/2017/10/10/1792483540934656/1793041726971904/STEM/6318e0e1e1f84a3da44c6ac2c1beaef2.png?resizew=36)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28e670e88873b35b46ad6d193d8a55e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2a51944c720568f35d443589dfc1aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9c0d827ef8598ba6b70b34b2bdcd1e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8ccd22fd0ca1a8e1468329284f91b6a.png)
①证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d16df3112ff53691d26bca57f85cdc3b.png)
②是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://img.xkw.com/dksih/QBM/2017/10/10/1792483540934656/1793041726971904/STEM/6318e0e1e1f84a3da44c6ac2c1beaef2.png?resizew=36)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://img.xkw.com/dksih/QBM/2017/10/10/1792483540934656/1793041726971904/STEM/6318e0e1e1f84a3da44c6ac2c1beaef2.png?resizew=36)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad8af7bed124f00c8e19b52d028b4d90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2016-12-03更新
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4卷引用:2015-2016学年湖北宜昌市一中高一上期中考试数学试卷
真题
解题方法
3 . 设函数
,
的定义域均为
,且
是奇函数,
是偶函数,
,其中e为自然对数的底数.
(1)求
,
的解析式,并证明:当
时,
,
;
(2)设
,
,证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc18241485bc13ad916ea64d41c344c2.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/880270d8cc1cf4f9e380f8963cb9f84f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb5f421939ee855f25927e7570d82c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46d4fcb22b9ef5b847927d6d3437e024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1d4bafd71569879b325f193b31bd143.png)
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2016-12-03更新
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4卷引用:2015年全国普通高等学校招生统一考试文科数学(湖北卷)
2015年全国普通高等学校招生统一考试文科数学(湖北卷)(已下线)2019高考备考一轮复习精品资料 【文】专题十四 导数在函数研究中的应用 教学案(已下线)专题22 导数解答题(文科)-2专题36导数及其应用解答题(第二部分)
4 . 已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/678d26cf3e7448c3212e85483cc344f2.png)
(1)判断
奇偶性并证明;
(2)判断
单调性并用单调性定义证明;
(3)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/678d26cf3e7448c3212e85483cc344f2.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d266dc2f313d44a034e1606f16a4003.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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2016-12-03更新
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2卷引用:2014-2015学年湖北华中师范大学第一附中高一上学期期中考试数学卷
5 . 已知函数
,且
.
(I)求
;
(II)判断
的奇偶性;
(III)函数
在
上是增函数还是减函数?并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3794200e18edea524ebd1a02b771f881.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92db09b87d1636b110c8e15232bef117.png)
(I)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(II)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(III)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16136f93ecf38f592d4b861b9e6333b2.png)
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2卷引用:湖北省黄冈市浠水实验高中2019-2020学年高一上学期10月月考数学试题
真题
6 . 设n是正整数,r为正有理数.
(1)求函数f(x)=(1+x)r+1﹣(r+1)x﹣1(x>﹣1)的最小值;
(2)证明:
;
(3)设x∈R,记[x]为不小于x的最小整数,例如
.令
的值.
(参考数据:
.
(1)求函数f(x)=(1+x)r+1﹣(r+1)x﹣1(x>﹣1)的最小值;
(2)证明:
![](https://img.xkw.com/dksih/QBM/2014/5/22/1571735197384704/1571735202652160/STEM/b210b038fbb344ac94a54aec26f9c0b2.png)
(3)设x∈R,记[x]为不小于x的最小整数,例如
![](https://img.xkw.com/dksih/QBM/2014/5/22/1571735197384704/1571735202652160/STEM/5941330c7eba43a5b07a8f3fbdc39e10.png)
![](https://img.xkw.com/dksih/QBM/2014/5/22/1571735197384704/1571735202652160/STEM/108a733b55f84c2e9e222d7a48ca2ca8.png)
(参考数据:
![](https://img.xkw.com/dksih/QBM/2014/5/22/1571735197384704/1571735202652160/STEM/2c1b4efceba3424a99b79389879110ff.png)
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12-13高一上·湖北武汉·期中
解题方法
7 . 已知函数
的定义域为
,对任意
,均有
,且对任意
都有
.
(1)试证明:函数
在
上是单调函数;
(2)判断
的奇偶性,并证明;
(3)解不等式
;
(4)试求函数
在
且
上的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/933093b52cca887f597cbe22a5467b11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dcbca3478eae63853d2aab5332e2e56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab0c6f119137e1b6760d55956d99d963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95169ab63f4c1f8700c7f74614ea18cd.png)
(1)试证明:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/933093b52cca887f597cbe22a5467b11.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(3)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19b8da144f89560098a6015062e21c2b.png)
(4)试求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc9ff391d1f811365ee330ca782ebf9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a494a7106fea103391ae89316e1770da.png)
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12-13高二上·湖北荆州·期末
解题方法
8 . 设函数
,其中a为常数.
(1)证明:对任意
的图象恒过定点;
(2)当
时,判断函数
是否存在极值?若存在,求出极值;若不存在,说明理由;
(3)若对任意
时,
恒为定义域上的增函数,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ffcad774c5ec7b1bd449203cdb9a866.png)
(1)证明:对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5de18ac322e3592d01cbdbcd4441642a.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b29a7faa14a6e09d0db2d04f4ced03.png)
(3)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1b536ab6c13d606a9f1efa9aefde3d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b29a7faa14a6e09d0db2d04f4ced03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解题方法
9 . 已知函数
.
(1)若
且函数
在
上是单调递增函数,求
的取值范围;
(2)设
的导函数为
,若
满足
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5633e40c35e8be1db5361044bfd74ac.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143b917df0520097be222accbddf9394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72728cdc6b1c5521eeba55ca804d2d74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfe299acc679f151fbe61ecda04d1662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb8a229cc42ec3bc9c5e68523cf5ebbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04bbbf510a09b09b85a0cefb9202d13e.png)
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2022-12-09更新
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6卷引用:湖北省十一校2023届高三上学期12月第一次联考数学试题
10 . 已知
.
(1)若
有两个零点,求
的范围;
(2)若
有两个极值点,求
的范围;
(3)在(2)的条件下,若
的两个极值点为
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dfbebe96106abe60a93fa0a23ad3e9d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)在(2)的条件下,若
![](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/ffd888afdcfdb3e91a157d50f65e915e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34c369c4bc49337cf1b9f783612bd04c.png)
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