已知函数
.
(1)求函数
的定义域;
(2)若函数
的最大值为2,求实数a的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/541a4787f46d625033ca96c2e16254dc.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
更新时间:2023-07-22 22:56:09
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解答题-问答题
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适中
(0.65)
名校
【推荐1】已知函数
,函数
.
⑴若
的定义域为
,求实数
的取值范围;
⑵当
,求函数
的最小值
;
⑶是否存在实数
,使得函数
的定义域为
,值域为
?若存在,求出
的值;若不存在,则说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60b85ce87a18e34bac31262b91c80b70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5defeadcd37d010faf90c22305e6c5fc.png)
⑴若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a00aefe8f4cf676d05ba6fb0303bc032.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
⑵当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66f0ca536621ec8db02707ba65917029.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b7438dce89339349594d858f4eb78e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2ac429737efebf150a1bd088ba846.png)
⑶是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd55400929c757f6f55f87e0e3d52df1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db527571cfd256c515424c6f9d114284.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcde49e2cdd9bc3b3be7f2bc49aa5e68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
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解答题-问答题
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适中
(0.65)
【推荐2】已知
且
,函数
.
(1)求
的定义域及其零点;
(2)设
,当
时,若对任意
,存在
,使得
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ed27491d585564c405929cff70959f3.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41db3b5b39e5f97ed5bb0bb0b46afa61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1cb9e00eabaf11e1caf2b48b2fa12f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/111077111b05c73ab9e035310c03731d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/032e8dc00cdc96860c9cbf8ac09677fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解答题-问答题
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适中
(0.65)
【推荐3】已知集合A=
,
.
(1)求
,
;
(2)求
,A∩(∁RB).
![](https://img.xkw.com/dksih/QBM/2016/2/26/1572500246609920/1572500252663808/STEM/d577fc07aa23495fb4d2c6266a83d6fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5cfee8914c6de4cf58e52357f0ea3f0.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8489e291d540e36c33cd17b037c1e9cf.png)
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适中
(0.65)
【推荐1】函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6f4ec6324186c84ebee8b31da41ce47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c133106460061f7a6ab4997fc616650.png)
(1)求方程
的解;
(2)若函数
的最小值为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6f4ec6324186c84ebee8b31da41ce47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c133106460061f7a6ab4997fc616650.png)
(1)求方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3047d4ab078dafc06c047bcbf0a6ffaf.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
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适中
(0.65)
解题方法
【推荐2】已知函数
,(
,且
).
(1)当
时,求函数
的单调区间;
(2)是否存在实数
,使得函数
在区间
上取得最大值2?若存在,请求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b1f2e90f61b09074bbd6526d86aa25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dad34d17f6abd936f417d907822d00f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次