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1 . 某家庭进行理财投资,根据长期收益率市场预测,投资债券等稳健型产品的年收益
与投资额
成正比,其关系如图1;投资股票等风险型产品的年收益
与投资额
的算术平方根成正比,其关系如图2.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/16/b3df6c32-f40d-42a8-b374-642dc3d6b93b.png?resizew=310)
(1)分别写出两种产品的年收益
和
的函数关系式;
(2)该家庭现有10万元资金,全部用于理财投资,问:怎么分配资金能使投资获得最大年收益,其最大年收益是多少万元?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/16/b3df6c32-f40d-42a8-b374-642dc3d6b93b.png?resizew=310)
(1)分别写出两种产品的年收益
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
(2)该家庭现有10万元资金,全部用于理财投资,问:怎么分配资金能使投资获得最大年收益,其最大年收益是多少万元?
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解题方法
2 . 已知非空集合
,
.
(1)若
,求
;
(2)若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55201a71f63e95aef66df1ca9e21551a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44fbb02d5a584747b4a8287c6c24e0d1.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea9a4259cca10c1f5af28e621ebafd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2024-06-10更新
|
325次组卷
|
4卷引用:甘肃省陇南市第一中学2023-2024学年高一上学期期末考试数学试题
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解题方法
3 . 已知函数
是定义在
上的偶函数,当
时,
,且
.
(1)求
的值,并求出
的解析式;
(2)若
在
上恒成立,求
的取值范围.
![](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/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5356fc43fc0523369cacd5f5af19efbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66348f5e56ee57df86b684605eea2194.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adc01c6292939914a1c7b78cafa54799.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解题方法
4 . 已知函数
,则下列说法不正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad7b9244e29eda3041bcf10667ad400.png)
A.函数![]() | B.函数![]() ![]() |
C.函数![]() ![]() | D.函数![]() ![]() |
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5 . 函数
的定义域为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14145264fa90feb0717a14b8a5cd7d47.png)
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解题方法
6 . 若“
,
”为假命题,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb1bbd495bb6477a9115925a994996f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d832b3548638ae5fcb9e970243decec6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7 . 已知
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f094503733211ca30c7f50c872b01f87.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-06-05更新
|
496次组卷
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3卷引用:黑龙江省大庆市实验中学实验二部2023-2024学年高三下学期阶段考试数学试题
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解题方法
8 . 已知函数
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfc436eb1738984ed3b50eca6569a02.png)
A.函数![]() |
B.![]() |
C.当![]() ![]() |
D.若函数![]() ![]() ![]() |
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2024-06-04更新
|
428次组卷
|
2卷引用:河北省深州中学2023-2024学年高二上学期期末考试数学试题
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解题方法
9 . 已知集合
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6b896811b39b4317a86f2fd82d4ec24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1ffcecd98607e741f043fb2abaeebb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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10 . 已知函数
.
(1)若
的定义域为
,求
的取值范围;
(2)若
的值域为
,求
的取值范围;
(3)设
,若对任意
,函数
在区间
上的最大值与最小值的差不超过1,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d849b398ebe71b26f1430e0d5938aaac.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.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/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdc0e2d6debff3defb88984d2592e955.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82dca4a0e082b5cbdb1beb6f4d1e2f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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