已知函数
为定义在
上的奇函数,且在
上单调递减,求满足
的
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f79c81cbad87b98161cdc6c6e6ac468.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2caf3019312a1f88a1c9f286b7b8631f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6f63382df4e0bba8250bee935579c60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/602e17e9bbabeba3afba0b94ba18aef9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
更新时间:2019-10-12 16:36:23
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解答题-问答题
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解题方法
【推荐1】已知函数
为幂函数,且为奇函数,设函数
.
(1)求实数
的值及函数
的零点;
(2)是否存在自然数
,使
?若存在,请求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fd892d6dc0b5f029c473d84a7cec2e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e111595ac59e1fb558b6a465a02829.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(2)是否存在自然数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1ad9124e3ff2e6f666404f1b0fd5d73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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【推荐2】已知
是定义在
上的奇函数,当
时,
.
(1)求函数
在
上的解析式;
(2)若函数
在区间
单调递增,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db2b74d89854116e411c089d053df053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/becd598a11b876d858728161a7a09705.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828d05bf56d2ed565e971fcf8eb3826b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
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(0.85)
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【推荐1】已知函数
是定义在
上的奇函数,且
.
(1)确定函数
的解析式;
(2)当
时判断函数
的单调性,并证明;
(3)解不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6794b9b34ac23dc91f77f307b4b0cf4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc30165c18de623d0a3efb961e606d1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eacfd4f44790db6afd10d3fcd7674e0.png)
(1)确定函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/998d1117b68d345ad988e86d1ec7724b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cba9597bce4f5e32884409924b83d829.png)
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较易
(0.85)
名校
解题方法
【推荐2】已知函数.
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f6bfdb24ecf5da863405c2b40936ff9.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43e8a52934a44b4b56a5d953b313b61f.png)
您最近一年使用:0次