名校
解题方法
1 . 已知函数
.
(1)对于函数
,当
时,
,求实数
的取值范围;
(2)当
时
的值恒为负,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a520cceb97903a7cd5ec376e22927de6.png)
(1)对于函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c8e64ec66441af6662c05f9cb80dd2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc419b80bd07a7d67e0bb0a955f1b774.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4694ae3e13494aee2ae554de7bd868c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caacc239e15792c2955b93717cb7d680.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2021-12-14更新
|
321次组卷
|
2卷引用:福建省同安第一中学2021-2022学年高一上学期期中考试数学试题
名校
解题方法
2 . 函数
满足
.
(1)求函数
的解析式;
(2)判断并证明函数
在
上的单调性.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61b9ff2db9c5bb44dc67de34709428e7.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)判断并证明函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bde1ab0a0348d09bc2e700dcac19dd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5d6243e93c41978871cb23d8e66148d.png)
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名校
3 . 计算:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a19827b7a7b1f9d75dc9c9aaa9868fa.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebc75d15563fc625d8db4ebcd02d62c9.png)
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4 . 已知函数
在区间[0,2]的最大值比最小值大
,求实数a的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bb2fb6043949ffd4a0fc14967e23c90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/158b045c6172c4178d7aa52083e1489f.png)
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名校
解题方法
5 . 已知
是指数函数,且图象过点
;又函数
是奇函数.
(1)求函数
、
的解析式;
(2)利用复合函数性质判断函数
的单调性;
(3)若对任意的
.不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25b8962c41f757f2b7d7fd4f6f4fc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74096266cd3ba88eebb475318a79b7ed.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(2)利用复合函数性质判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
(3)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dd7c7d0acda4d447f2ea0d5d4225c44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfad7ac7b97478b109f02b15f2b48a5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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名校
解题方法
6 . 已知函数
(a是常数).
(1)当a=1时,求证以下两个结论∶
(i)f(x)为增函数(用单调性的定义证明).
(ii)f(x)的图像始终在
的图像的下方.
(2)设函数
,若对任意
,总有
成立,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbac71d5faa4f27403e8f893877f5d34.png)
(1)当a=1时,求证以下两个结论∶
(i)f(x)为增函数(用单调性的定义证明).
(ii)f(x)的图像始终在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3eaa8bab66c474ce82054200b6fbaef.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa7a2da4c5a09c683f3b4e4012860e58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5631bc68728bbf17b87c3e7e7f8e425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d5175cd5cfeae6662595785d141ed72.png)
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2021-12-02更新
|
429次组卷
|
2卷引用:福建省福州市福建师范大学附属中学2021-2022学年高一上学期期中考试数学试题
7 . 计算下列各式的值.
(1)
;
(2)已知2a=3,4b=6,求2b-a的值.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34bff95b595530127053c0dbb0a9c4d0.png)
(2)已知2a=3,4b=6,求2b-a的值.
您最近一年使用:0次
2021-12-02更新
|
710次组卷
|
2卷引用:福建省福州市福建师范大学附属中学2021-2022学年高一上学期期中考试数学试题
名校
解题方法
8 . 集合
,
,
.
(1)求
;
(2)现有三个条件:①
;②
;③
是
的必要不充分条件.在这三个条件中任选一个填到横线上,并解答题目.
已知______________,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/264ef8ac765b62e2d3db68178425da58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46c548e2fb84d91b3e52f4a6717f1f47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bc5e5f206e0377b73b5345593ace19a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)现有三个条件:①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e968937d457d9e2237b401077ff224a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/521c8f3f084af427ec1c464f8b6bed86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3eb5935678e432e6f1f3180bfdb3175.png)
已知______________,求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解题方法
9 . 如果函数
在定义域的某个区间
上的值域恰为
,则称函数
为
上的等域函数,
称为函数
的一个等域区间.
(1)若函数
,
,则函数
存在等域区间吗?若存在,试写出其一个等域区间,若不存在,说明理由;
(2)已知函数
,其中
且
,
,
.
①当
时,若函数
是
上的等域函数,求
的解析式;
②证明:当
,
时,函数
不存在等域区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57b85a97933a1d984f6e484b4021c800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57b85a97933a1d984f6e484b4021c800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57b85a97933a1d984f6e484b4021c800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57b85a97933a1d984f6e484b4021c800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/becd598a11b876d858728161a7a09705.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9e44441d9386b9a6d9bc15d63e43142.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abd313d4e92a762fb7fb0c1cb65263d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d285a4c557fc9748105b62ccd94b7859.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c2bfa9b7e6e9d94f36a46e197eb5a61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e11f4ca0e7ace69f92130d0525bcdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
②证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7326ea56be82bd616fec7e6aa3c884c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c07cce48c7b98fee65b261a97a77b5c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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10 . 已知函数
,幂函数
,且函数
的图像过点
,当
趋向于负无穷大时,
的图像无限接近于直线
但又不与该直线相交:函数
在区间
上单调递增.
(1)分别求出
,
的解析式,并在同一直角坐标系中作出两函数的草图;
(2)定义
,
表示
,
中的最小者,记为
,例如,当
时
表示
,
中的最小者.请结合(1)中的两个函数图像分别用图像法(草图)与解析法表示
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/689ea48af88c81bf5d8caa8a874bf897.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fa30972a884b5ca4e8d5b446c49f30a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b672f564d03ed46d092bb130f229ad8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b59035e21a32d3dbbbd187dbbdce4f6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b672f564d03ed46d092bb130f229ad8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eefa44964db83759aff6fc8dd7ef8f28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86135bd40536042536c1c7bed21d0171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce700a387c89497f5c98889881a735c1.png)
(1)分别求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b672f564d03ed46d092bb130f229ad8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86135bd40536042536c1c7bed21d0171.png)
(2)定义
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc1565a96b855a13cca6b532ec927e1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b672f564d03ed46d092bb130f229ad8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86135bd40536042536c1c7bed21d0171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/491d75a2807f703235e9942e64f8f1eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f557a3dac5cf06b39838c334ebd6f32b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81017c9e24636b4f4c72de239df129c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af61667d0bd9cec50059d1ce952964f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc1565a96b855a13cca6b532ec927e1f.png)
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