已知函数
.
(1)若函数
,求函数的值域;
(2)若关于x的方程
有实根,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c657335ed0009e0d932a62c5fed5e28.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a160f31abe2b4469fc999f850c7a480.png)
(2)若关于x的方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c68c84ad694f45ba3541186bf306ccd.png)
更新时间:2020-02-11 10:01:34
|
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解答题-问答题
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较难
(0.4)
名校
【推荐1】若存在实数对
,使等式
对定义域中每一个实数
都成立,则称函数
为
型函数.
(1)若函数
是
型函数,求
的值;
(2)若函数
是
型函数,求
和
的值;
(3)已知函数
定义在
上,
恒大于0,且为
型函数,当
时,
.若
在
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8abecc964bafa0e504d425ddf616b0f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99eaeb2ab68a49074d623ffca072fed8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d58d38aada761bb291d59c44707a2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d29715b14151c67adf8bdb2b7081ddbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(3)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b26c416363ab2a9ed000b429540db55e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69abe959988e4c8c0739f5857ccfb0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cdb4afc44f046d36049253bca463d21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9d3a09983baff9f195246143df14e0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e0769db255cf03e3e213d629970ca70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b26c416363ab2a9ed000b429540db55e.png)
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解题方法
【推荐2】已知函数
(其中
),函数
(其中
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(1)若
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(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/612884567e24c71c06656f38d544768e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37b97b295f88972ba1c7e3cefda0885d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cd05dc8a356cf5c33f6fd919917c7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d285a4c557fc9748105b62ccd94b7859.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e69866076dcff686a05e9e91e61e68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83f18c00c3dd5147dc4ea8c281797231.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
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较难
(0.4)
【推荐1】已知函数
,
.
(1)根据定义证明函数
是减函数;
(2)若存在两不相等的实数
,
,使
,且
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/046b35487e3abfc924cbf36371178aab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38740c17208fd3be1460509bea58c687.png)
(1)根据定义证明函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若存在两不相等的实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb98187e9bfb37f35f2c9ce37987072f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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较难
(0.4)
【推荐2】已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86974259b3dff2f70e202e9c66cdf46b.png)
(1)设
,
,若函数
存在零点,求a的取值范围;
(2)若
是偶函数,求
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(3)在(2)条件下,设
,若函数
与
的图象只有一个公共点,求实数b的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86974259b3dff2f70e202e9c66cdf46b.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0384a0466920e5bf00231a5c5bf77969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e69866076dcff686a05e9e91e61e68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)在(2)条件下,设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/739ddca433c4b5f3935ebfda60770f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
您最近一年使用:0次