已知定义在
上的奇函数:
.
(1)求
值;
(2)解不等式
;
(3)设函数
,若
,
,使得
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78cdd6c404799f92211fc8aab3ebc332.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f947a5775b1e1caaa5679bd3d689a725.png)
(3)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbb5da3d2abe7590d25331112e4dfa5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8688297990e6616b7e1b8ee2269b37e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ad3e902bdc48a4e6042deb26c2399f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/032e8dc00cdc96860c9cbf8ac09677fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
更新时间:2023-12-21 21:58:51
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相似题推荐
解答题-问答题
|
适中
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【推荐1】我们知道,函数
的图象关于坐标原点成中心对称图形的充要条件是函数
为奇函数,有同学发现可以将其推广为:函数
的图象关于点
成中心对称图形的充要条件是函数
为奇函数.
(1)已知函数
,
(i)判断
的图象是否关于
成中心对称,并说明理由;
(ii)判断
的单调性(无须说明理由),并求不等式
的解集;
(2)求函数
图象的对称中心.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bec550c01b4f075f22ab67f5e55ed5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05d0969cb7acbeaa05a101a385348a00.png)
(1)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d561652db46e57667cd881a09aa0f46.png)
(i)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
(ii)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3459a8d998fa27be70c018385855f1d3.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac08cd710aac380d70b225256e93e84.png)
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解题方法
【推荐2】已知函数
是奇函数.
(1)求实数
的值;
(2)判断函数
在
上的单调性,并证明你的结论;
(3)若对
上,都有
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad1071261aa6d0b783bf029da5b66d0e.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
(3)若对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b71b9fcfca2ad487760d608ff2b50365.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/853390f301728ccc6fa345235f9f9ec7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解答题-问答题
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解题方法
【推荐3】给出关于函数
的一些限制条件:①在
上严格减函数;②在
上是严格增函数;③是奇函数;④是偶函数;⑤
,只在这些条件中,选择必需的条件,补充下面的问题中:
定义在R上的函数
,若满足__________(填写你选定条件的序号),且
,求不等式
的解集.
(1)若不等式的解集是空集,请写出选定条件的序号,并说明理由;
(2)若不等式的解集是非空集合,请写出所有可能性的条件序号(不必说明理由);
(3)求解问题(2)中选定条件下不等式的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75e8e1c23498053dece274fc224982d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01bea8bf593f594c51fc7cc547482bee.png)
定义在R上的函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a431537df789febf4bc45e3dc23cefaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc9be84317ee1a24708cf6aea6d52485.png)
(1)若不等式的解集是空集,请写出选定条件的序号,并说明理由;
(2)若不等式的解集是非空集合,请写出所有可能性的条件序号(不必说明理由);
(3)求解问题(2)中选定条件下不等式的解集.
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解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】已知函数
是定义域上的奇函数,且
.
(1)求
的解析式;
(2)令函数
,记
的最小值为
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd044bbb73cbbbbc4c0d1da5463477a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1a0169e37472db54391a8d175f8b2de.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)令函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/509a9b3fbe9822cf3d17c71ceb7be374.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a82a1224e47f31ecdfffd328d5a3ab6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a82a1224e47f31ecdfffd328d5a3ab6d.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
【推荐2】已知函数
(
)为奇函数.
(1)求
的值;
(2)判断函数
的单调性,并用定义证明;
(3)若对任意
,不等式
恒成立,求实数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07d28fd96a55f935ee1528bb1047f6fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e5a0f5a60946bb8fcf8919c9c2bd4a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bdc86384460a76877c36a1213651975.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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解题方法
【推荐3】已知函数
是奇函数.
(1)求实数
的值;
(2)判断
的单调性(不用证明);
(3)求不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a08cdc1c5b7518735985e77dc12934a4.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d661dbd33133ed72d7f00193d0eaeeb4.png)
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解答题-证明题
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解题方法
【推荐1】已知函数
,
,其中
是
的正比例函数,
是
的反比例函数,且
,
.
(1)求
的解析式,并指出定义域;
(2)求证:函数
在
上是增函数;
(3)若
在
上恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15f05741af66697086e7cc83fdedba2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aa852b958bdc92713a999ca5e32361a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6855784817151468771f29c0fc38fc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03ac701c08b5398b5b608820ca10ee0e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ba01c1d0c56ce520d1e22008d24cb23.png)
(2)求证:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/927156291739e2a24d99e8cbb5061633.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16136f93ecf38f592d4b861b9e6333b2.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e012c8869b238f235a43c5ca94cb18e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16136f93ecf38f592d4b861b9e6333b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
【推荐2】已知命题
函数
在
上单调递增;命题
不等式
的解集为
,若
为真,
为假,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76dffca42af1d8c2832a3a102dbb6959.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d81c9e49bee680263d0f88af1f1ea825.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
【推荐3】已知函数
满足:①当
时
;②当
时,
.
(1)求
,
的值.
(2)若对任意的
,不等式
恒成立,求实数
取值范围.
(3)若对任意的
,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d45775077acb89e65dd5cb736ff786fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8076b511e27939c629762296b8cfd08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75468ccb005763d453ead8dd6fc994bf.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a9e6eae2dce39eab0463e0fb1c6ffa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8326eccb6fccce4cad9ff889bf0febbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9e44dfd7d1fb6ac8863e2a32df363ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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