解题方法
1 . 设
,且
.
(1)求
的解析式;
(2)判断
在
上的单调性并用定义证明;
(3)设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efbb39c1c994df1bcc277fed63fce574.png)
在
上有两个不同的解
,求集合
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dc4e3775c850f1c1804f9eb7a70153a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb827f46178762d5293fd818a6db0e43.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/032e3d25c9f38a3cf745fed1ce3297be.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efbb39c1c994df1bcc277fed63fce574.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c238ce891f370e22aa72ec56a108348d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51b85da66243efd91e7c606c42f17da5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a1b81be655b7177a9644520b18208e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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11-12高一上·黑龙江牡丹江·期中
2 . 已知函数
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d3f6b391ea61123ad971c054b145513.png)
(1)若函数
为奇函数,求a的值.
(2)若
,有唯一实数解,求a的取值范围.
(3)若
,则是否存在实数
(
),使得函数
的定义域和值域都为
.若存在,求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07d28fd96a55f935ee1528bb1047f6fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d3f6b391ea61123ad971c054b145513.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ccc17226e09066a73258811c81e67a0.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b108daeed07cc138b15d220f397eacd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db527571cfd256c515424c6f9d114284.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
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2018高三·全国·专题练习
名校
3 . 设函数
.
(1) 解不等式
;
(2) 设函数
,若函数
为偶函数,求实数
的值;
(3) 当
时,是否存在实数
(其中
),使得不等式
恒成立?若存在,求出
的取值范围;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f45afdf4d717bb03adac6b899c367acb.png)
(1) 解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abc38a1a4ca86cff91d20231f77af3c7.png)
(2) 设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5be8921bfa99fe9d672b17df5603cd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3) 当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc53cc62e5d6cbb977c838049d20565a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d61f98f7418eda31a1d7c457e3841c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3659d776c43a99425b69a2b3ce28a989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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