已知函数
为奇函数,
.
(1)求实数
的值;
(2)若
恒成立,记实数
的取值范围为
,问是否存在不同的
,
,使得
?若存在,请举例,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acd4d5f6c11759396d960e802c3489b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d28683f4d4f27c0cbd6d6d18a548ef74.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4a2854d80c82492fd94f4b330ad3f68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3830ea6ea58c99a0fc1adadccac0fab2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/495d6771eaeeb4bfb162f798d21221d5.png)
更新时间:2021-12-23 17:01:15
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解答题-问答题
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适中
(0.65)
名校
【推荐1】已知函数
.
(I)证明:函数
是减函数.
(II)若不等式
对
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51a4ea53003a6f3d2867013e3542b077.png)
(I)证明:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(II)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bb456c9d65ff1a42dc788fd2985d655.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44165805c9477000c83b902377ea3455.png)
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【推荐2】设函数
对任意实数
,
都有
,且
时,
,
.
(1)求证:
是奇函数;
(2)求
在
上的最大值与最小值.
![](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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab0c6f119137e1b6760d55956d99d963.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91288f3376f00e3e4e37376c14f5c81d.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e99bebf8db0d314aacb2cb1f09bf48c.png)
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【推荐1】已知函数
在定义域内是单调递减函数,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b2818abd6d38142e638b8453c2bb77a.png)
(1)求实数a的值.
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有实数解,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bb2fb6043949ffd4a0fc14967e23c90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b2818abd6d38142e638b8453c2bb77a.png)
(1)求实数a的值.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04a6386018aa8d12c7d0543ddd81e964.png)
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解题方法
【推荐2】已知
.
(1)若
的值域为
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(2)已知
,当
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,总存在
,使
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23d78aaf3a0483ab2e266718a18b96fb.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a363cf0319a39aadb9fa2ab7ecf07768.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0391e39aaeb4e3cc883b0439d7f69d6.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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【推荐2】已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9b8a974c18b39df7f514e2fa20f1c56.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9145262294d99cd52e74bec13ce58ece.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ba6d46ff894edc73276e75753fb9e70.png)
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【推荐1】二次函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33782898b0396ffaefe9245850f888a9.png)
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解题方法
【推荐2】已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c4c48110dd55edc63c9977b5e4f68a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3471484b64504fc545398f52be830010.png)
(1)求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99f68c6ed09e483db6edf0b4caf5e252.png)
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适中
(0.65)
【推荐3】已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
(1)求函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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