已知定义域为
的函数
是奇函数.
(1)求
的值;
(2)判断函数
在
上的单调性,并证明你的结论.
(3)是否存在实数
,对于任意
,不等式
恒成立,若存在,求出实数
的取值范围,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53d95afec49bce34b4a897c89dc2a0fb.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
(3)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6af2f597ea3f4dcfb89acb19a4ea6355.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62114be1b4855205182a630dc2e1065e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
更新时间:2019-12-18 19:40:19
|
相似题推荐
解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】已知函数
.
(1)当
时,求
的单调增区间;此时若对任意
,
,当
时,都有
,求m的最大值;
(2)当
时,记函数
,在
上的最大值为
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3db58afeac1cfe83233a8887e16f59b7.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f139f45e7324f2fccab55e330701a0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb2acda475d78ae40df6752e47afa2d6.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff15edab9ddf11f32ca3c3acce6663f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3e1488742f80501916e7ca330629efe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66ef59c3970f3581a5ea29e21fd564d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b3ae7e5228fd1acb0d46f6941143a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b3ae7e5228fd1acb0d46f6941143a7.png)
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解答题-证明题
|
适中
(0.65)
解题方法
【推荐2】已知函数
.
(1)求证:它在区间
上是严格增函数;
(2)若
,试比较
与
的大小(请说明理由);
(3)若
对于
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cec2b552d969d0d90bfe84dfafed3f2.png)
(1)求证:它在区间
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2372f424431ce7b547a66b7d61d75421.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/824d473b8c6ebcb5da3dd025e9440acb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9132eb2a57739a29da6d837e3e15656e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358a8c4b80eaecb74105b17eb87be958.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619e31e72ba6aaeb83bb2acb4a0f2557.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fad48c242b2320092f2071921696bad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐1】已知定义在
上的奇函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ebfe750836a5c7f42310ffc3cb8759f.png)
.
(1)求
;
(2)用定义证明:
在区间
上单调递减;
(3)若实数
满足
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ebfe750836a5c7f42310ffc3cb8759f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3904c07a658f9c5f93f858224c52787b.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)用定义证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7dcdd87d593df4a5c5e98d47fe1cfa6.png)
(3)若实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a374e1d90dc5eb4116a7b7e2ed3ff8eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐2】函数
是定义在
上的奇函数,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b25fc43aed4ab856199da8c3b6092e8c.png)
(1)求函数
的解析式;
(2)用定义证明:
在
上是增函数;
(3)解不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0968841c3b9731f5fe1308f9dc7c5023.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc30165c18de623d0a3efb961e606d1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b25fc43aed4ab856199da8c3b6092e8c.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)用定义证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc30165c18de623d0a3efb961e606d1c.png)
(3)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9decdb0fe6b8d1669f978acb526e49f6.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1】已知
是定义在
上的奇函数.
(1)求
与
的值;
(2)判断
的单调性,并用单调性定义加以证明;
(3)若
时,试比较
与
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d036723578d72bdb64bc09f052b43375.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/417ab20883d799aaf311371393fa7d7c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4365c26dfbd40be75f5b5928956e5412.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c2c4e672cfe785d0f58d81b8f2eeb85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39604cda3745af41de51930f5a5d900e.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
名校
解题方法
【推荐2】已知定义域为R的函数
是奇函数.
(1)求实数a的值;
(2)若不等式
对任意的
恒成立,求实数t的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39027cd6cdc96e73da2e283826dc45c1.png)
(1)求实数a的值;
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0aa68977c9e7bc220e8bbf95670dae4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】已知二次函数
,对任意实数
,不等式
恒成立,
(1)求
的取值范围;
(2)对任意
、
,恒有
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c43c6dbeab3ca3c3d1ec292dafebd8f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf15ee21c4b2d6cee0971c5ab0e43452.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a32822a106d217ffdec43557a236f786.png)
(2)对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60884d39334907d6ea1d4e7af187b164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1a8c69aaecfbe4d8bd7cf01a3b79c50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
名校
解题方法
【推荐2】已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7dfb1da2f7dc3c821ca328f02cfb3e3.png)
(1)求函数
的解析式;
(2)若
是定义在
上的奇函数,且
时,
,求函数
的解析式;
(3)
,若不等式
恒成立,求实数t的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7dfb1da2f7dc3c821ca328f02cfb3e3.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.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/9baa860170c8fe9b3cbebeab8c4b9ada.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6d51eb0c767a896ffe0170b8612dc03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52ae7c4deab1295d716c002cff415ce2.png)
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