已知函数
的定义域为
,值域为
,其中
.
(1)若
关于原点对称,求实数
的取值范围;
(2)试判断1是否在集合
内,并说明理由;
(3)是否存在实数
,使得对任意
,都有
成立?若存在,求出
的取值范围;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d6de958c30f5c9b5858681662d321cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)试判断1是否在集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(3)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e02cab1add26335b3cb43d5b54c7c853.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47809f53e4dc821e7f3d0cfa4ef03cf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2020-07-16 00:13:03
|
相似题推荐
解答题-问答题
|
较难
(0.4)
名校
【推荐1】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b2223c37bdee4193170ffe5516821cd.png)
(1)求函数
的值域;
(2)若不等式
在
上恒成立,求实数
的取值范围;
(3)当
时,函数
的值域为
,求实数t的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b2223c37bdee4193170ffe5516821cd.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/368c10e174ad4f911aa208a722626968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ebb4d562f56378b1c95ee5572964f28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c3d4b9ca79696c393ea15f148893346.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57e62f5491eb00c8827fdea1868dde6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98a91188b128cd479ae54ae0396e02e5.png)
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(0.4)
【推荐2】已知实数
是常数,函数
.
(1)求函数
的定义域,判断函数的奇偶性,并说明理由;
(2)若
,设
,记
的取值组成的集合为
,则函数
的值域与函数
(
)的值域相同.试解决下列问题:
(i)求集合
;
(ii)研究函数
在定义域
上是否具有单调性?若有,请用函数单调性定义加以证明;若没有,请说明理由.并利用你的研究结果进一步求出函数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07c79e521589dfa66fa820156cb56a2d.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd415208c35bb0a739f8ab1e965249ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2c2b776c9536d623c75a68d4b91e624.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8118a3dbf73abb1de2211c0e863e925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cd0fe883569bbe8070ef231b3596b60.png)
(i)求集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(ii)研究函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8118a3dbf73abb1de2211c0e863e925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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【推荐1】已知:函数
,
.
(1)若
的定义域为
,求
的取值范围;
(2)设函数
,若
,对于任意
总成立.求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cc90719c0078d2a9dd6590b9ba55bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7fda90490b6b98cb1f0878b0cace041.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a20457d180264f78d611dc7893d735.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/989f8bd34cd1acecae079e1bc244d64b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4ea6baecc58836834dff78b68bf09cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
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(0.4)
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【推荐2】已知函数
.
(1)当
,且
时,求
的值;
(2)是否存在实数a、
,使得函数
的定义域、值域都是
.若存在,则求出a、b的值;若不存在,请说明理由;
(3)若存在实数a、
使得函数
的定义域为
时,值域为
,求实数m的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5e69d34687b201c48a6758257ed834d.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e14206c7d228a7c2259a7b27da8813.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aba934874cc9f2ab272fdff67ea23bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f7266b2ef457b8ddeee3fa2cc24022e.png)
(2)是否存在实数a、
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f9fcab2886322d40bb5b52d997984fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
(3)若存在实数a、
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f9fcab2886322d40bb5b52d997984fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/030052a6936e5136de625c65eea375af.png)
您最近一年使用:0次
解答题-问答题
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解题方法
【推荐1】已知
.
(1)当
时,
时,求
的取值范围;
(2)对任意
,且
,有
,求
的取值范围;
(3)
,
的最小值为
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ad48963a0d010c75896624436186214.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a495c197fcbacb8c109aa0060525a371.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e99f6241f03f76761403af0c53d3a0f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f0e9c04402a0ffdaa25c3e3c82c7dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18366c5d28d28abb643838e1e69310a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8814438b8affe65eba614d3bc4d528c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0225bca34eaf19544939b29153aac1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0225bca34eaf19544939b29153aac1.png)
您最近一年使用:0次
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解题方法
【推荐2】已知函数
.若对任意实数
,都有
恒成立,求实数
的取值范围;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7099112b4aaca7cc9454781b0532c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次