已知集合
,函数
,且
.
(1)求
;
(2)若集合
,且
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31ecfb7f08b63c1ff1d294d21fbec3ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80980c22841f52a41cb63728ced68a16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aecbd83f33e4cbac5ca80c5a2776c1d4.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4393921ddf173ed7f0fc87b0a3a36785.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf22d7d1a965bda25168a233fb6290c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2020-02-18 14:10:01
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解答题-问答题
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适中
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名校
【推荐2】已知集合
,集合
.
(1)当
时,求
;
(2)若“
”是“
”的充分条件,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f84e15eaf05e26b398fb2975f86ad80c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bff42672a7774475331efa0fb450cecf.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)若“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解答题-作图题
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适中
(0.65)
解题方法
【推荐1】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891f1431399702a067b01b805de93bd2.png)
(1)求函数
的解析式,并作出函数
的图象;
(2)设
在区间
上的最小值为
,求
的解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891f1431399702a067b01b805de93bd2.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d300a3a6d3270bccac16b34fd7a3cb5b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/29/2561de6e-b695-4b3f-bb6d-8823c716680c.png?resizew=215)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d300a3a6d3270bccac16b34fd7a3cb5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/915d0107eeb846ab11f50d03308fa240.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a82a1224e47f31ecdfffd328d5a3ab6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a82a1224e47f31ecdfffd328d5a3ab6d.png)
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解答题-问答题
|
适中
(0.65)
名校
【推荐2】已知函数
,
.
(1)令
,可将已知三角函数关系
转换成代数函数关系
,试写出函数
的解析式及定义域;
(2)求函数
的最大值;
(3)函数
在区间
内是单调函数吗?若是,请指出其单调性;若不是,请分别指出其单调递增区间和单调递减区间(不需要证明).
(参考公式:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80b54842c2007b0930e294ca1df06cb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cab298da42bf476346333e722a7d9e63.png)
(1)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d29e4bb925a59fe470df5203472230df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7028a5fa4d781d382ca3b73b74796e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a060e069d95922973d544b963ea4ff7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a060e069d95922973d544b963ea4ff7d.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7028a5fa4d781d382ca3b73b74796e.png)
(3)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7028a5fa4d781d382ca3b73b74796e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d332313d8d31b811d9434d9a48879e5.png)
(参考公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4afaa41d2c78ba2c632d8ec507e2027.png)
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