已知函数
.
(1)判断函数的奇偶性,并给出证明;
(2)当
时,判断
在区间
上的单调性,并给出证明;
(3)若
时,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d26538f30354f3cf6e8c4ddb4fc09df5.png)
(1)判断函数的奇偶性,并给出证明;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcbd5bb726a08c308b48373afebbb768.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b094cba781181aeb90752170e9ba6c94.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94cc25a7cf28ed096549fbae97fce40a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
更新时间:2023-12-15 16:57:42
|
相似题推荐
解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐1】已知函数
是定义在
上的奇函数,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380360f227a7c91ec9bd9336694ca16f.png)
(1)求函数
的解析式;
(2)判断函数
在
上的单调性,并用定义法证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a509aa334f109e4d5ecfb98606a855f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1be2e86c2a67776acee929493849f46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380360f227a7c91ec9bd9336694ca16f.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f6bfdb24ecf5da863405c2b40936ff9.png)
(2)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f6bfdb24ecf5da863405c2b40936ff9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1be2e86c2a67776acee929493849f46.png)
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【推荐2】定义在
上的函数
对任意
都有
,且当
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69091e8b3f89b287dbf3610d75d9b537.png)
(1)求证:
为奇函数;
(2)求证:
为
上的增函数;
(3)若
对任意
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dcbca3478eae63853d2aab5332e2e56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab0c6f119137e1b6760d55956d99d963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69091e8b3f89b287dbf3610d75d9b537.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a0f41d78d70151da37df54c7851b114.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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解答题-问答题
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适中
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解题方法
【推荐1】判断下列函数是否具有奇偶性:
(1)f(x)=x+x3;
(2)f(x)=-x2;
(3)f(x)=x3+1;
(4)f(x)=
,
.
(1)f(x)=x+x3;
(2)f(x)=-x2;
(3)f(x)=x3+1;
(4)f(x)=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/001fcc4e5ae0e10446047991ce245bb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca97e3aa8061c4d8e621c5598c69b13b.png)
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解题方法
【推荐2】已知________,且整数
.
①函数
在定义域为
上为偶函数;
②函数
在区间
上的值域为
.
在①,②两个条件中,选择一个条件,将上面的题目补充完整,求出
的值,并解答本题.
(1)判断
的奇偶性,并证明你的结论;
(2)设
,对任意的
,总存在
,使得
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63f5049f9dd88bf40e881ca44f92fea5.png)
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b647dbfb14c501a58b1f9275570cbe0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/991187d3d71a019baa6cb5799bb9a0f4.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c939cd652ae825a290cfa0d6e15b9ade.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c1756b564bf1d998d8179637011c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c1756b564bf1d998d8179637011c88.png)
在①,②两个条件中,选择一个条件,将上面的题目补充完整,求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8336841b5bc3cb4913835080b9d85933.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12965bbc260bdbb0df0a110e59fb8d78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/204e6006eacca1a448fe6991f3c121f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45bc85e19745af6992cbb72c3fd79ee7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
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【推荐3】已知函数
.
(1)若
,求函数
的零点;
(2)探索是否存在实数
,使得函数
为奇函数?若存在,求出实数
的值并证明;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de27aa3a5565dfcee2bbecd84ad1770d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8efdff29ef3cdf577b3d69b0e7a31f1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)探索是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
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【推荐1】已知实数
是定义在
上的奇函数.
(1)求
的值;
(2)求函数
的值域;
(3)当
时,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a63effa2179ead1df97fad2f2023241.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0eac2b31a19918895e5af2d316490e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/459d7a3a540b3495bbb8ca8a67f1f56c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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【推荐2】已知函数
的图象经过点
和点
,
.
(1)求函数
的解析式;
(2)若关于
的方程
在区间
上有实数根,求
的取值范围;
(3)设
,若对于任意
,都有
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4d58bdf338d76bbc035a280202d687e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a948d2f7732d7f03e986c63712089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80991c1f0c963104740e50cfff6f29a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fed62208af6047cd1374c6db9d21e8c1.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02a653a74ce5123f38f221b98c3967ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f114df5ceabdb7e5fd3fdad4eaf056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f39346502d506e6f1ceb93db5d8b94ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a16f30279cafd5c7ef0aecc3ddd9356c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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