名校
解题方法
1 . 已知函数
.
(1)若函数
为奇函数,求
的值;
(2)当
时,用函数单调性的定义证明:函数
在
上单调递增;
(3)若函数
有两个不同的零点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0dc17517b561f6196d2316faf55003.png)
(1)若函数
![](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/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef9f333cee2ccb2b215d93011a162f7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44e33629a5f5acd3cdd13747ef42a0eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2024-02-01更新
|
778次组卷
|
2卷引用:江苏省镇江市扬中市第二高级中学2023-2024学年高一上学期期末模拟数学试题(三)
2 . 去年某商户销售某品牌服装9000套,每套服装利润为50元.为提高销售利润,今年计划投入适当的广告费进行产品促销.经市场调研发现,若广告费用为
(万元),则该品牌服装的年销售量将增长
.请你预算该品牌服装的净利润(净利润为销售利润减去广告费用)
(1)若使得今年净利润比去年至少增长
,请你预算广告费用的范围?
(2)当广告费用多少万元时,品牌服装的净利润最大?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a79f6e83dba03b20796624c64004c1b9.png)
(1)若使得今年净利润比去年至少增长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
(2)当广告费用多少万元时,品牌服装的净利润最大?
您最近一年使用:0次
3 . 已知函数
.
(1)证明:函数
有且只有两个不同的零点;
(2)已知
,设函数
的两个零点为
,试判断下列四个命题的真假,并说明理由:
①
;②
;③
;④
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edca4db207f4b253d6e9c780e557642f.png)
(1)证明:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf910f82c3094b267a3d481d23d829f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca579894dad67bc82cb715fd48e0d70.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d3b114eb69ad77a0495468af7bb41b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/885c20eafab97db145af40138279adbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e2095119185f0410bb10cae34f14243.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e4a11440f9199546f719432280176f2.png)
您最近一年使用:0次
4 . 已知函数
的定义域为
.
(1)如果不等式
恒成立,求实数
的取值范围;
(2)如果函数
存在两个不同的零点
.
①求实数
的取值范围;
②求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0c02045022dd5c5f34279af155b4bd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b190d17d0acf5d624b034ed45059bb.png)
(1)如果不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)如果函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca579894dad67bc82cb715fd48e0d70.png)
①求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3706663e80dcc8124c18cdc7e6b87eba.png)
您最近一年使用:0次
解题方法
5 . 已知集合
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f24496a380ce63ded97648ca90058423.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de900cafc61bbddc8de6e2f574d3e1d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
6 . 函数
的定义域为
,则值域为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e84b35cd01b2172e42046829f6b9d89c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c11767d3b2d0d61f89eb93779d225db2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
7 . 已知函数
在区间
上的最小值为
,则区间
可以为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0acb87405f9e543d1a4eb639bf685f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
8 . 已知函数
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa28e78b29c779fae5fdfe8b26bb7868.png)
A.![]() |
B.当![]() ![]() ![]() |
C.当![]() ![]() ![]() |
D.函数![]() ![]() ![]() |
您最近一年使用:0次
9 . 已知函数
,
.甲:当
时,函数
单调递减;乙:函数
关于直线
对称;丙:当
时,函数
单调递增;丁:函数
图象的一个对称中心为
.甲、乙、丙、丁四人对函数
的论述中有且只有两人正确,则实数
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/660fca78297b4fcdc25334ab085f5769.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3744ee15af01a8e7c0f126edb5f68132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d1c7571006978c5115a9a6bd764698a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9895bf4192f5c55c16f8270d53c49b13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/137739372880c55fcfd61efeeaba4eab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18b212e0d4339cbd3d236a807547ebf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
10 . 幂函数
满足下列性质:(1)对定义域中任意的
,有
;(2)对
中任意的
,都有
,请写出满足这两个性质的一个幂函数的表达式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba99a5c5661eedaef4b36ade1a7c5c5.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62826e5114ece563439421509970dc12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9f58d4591d668b4bc32fae4faab8298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd477d0829771f12b1adfc4671331e54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba99a5c5661eedaef4b36ade1a7c5c5.png)
您最近一年使用:0次