1 . 已知函数
,
.
(1)求函数
的最大值;
(2)当
时,
恒成立,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/805014c49517528eb2270e6da07fb0ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3212b0b28fad18fbbe1c748e5dd9c528.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc4667feb31750a39b9cc4703f2f0edd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce485410257c9c1fae9d87ce3e44cc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4acda6b6464db27e1ec18a1522406d2.png)
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解题方法
2 . 记全集
,函数
的定义域为集合
、函数
(
)的值域为集合
.
(1)若
,求
;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a64dc61989ca50b9ee19d835c4ed268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6812bb9247a9fd820e3399653426b904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7750201bdf0b94b9da4a2abc70a013c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f274f1247962a5b263183922fedfa086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6aa5051711f5df6206fea538f2bdf61.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b05d2be27e8f53e4de3071846dffb41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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3 . 把
的图象纵坐标保持不变,横坐标变为原来的2倍得
的图象,已知
图象如图所示
![](https://img.xkw.com/dksih/QBM/2021/1/26/2644338942271488/2645324136136704/STEM/51a35c05-1af4-44f5-98bc-7cf96e41170e.png)
(1)求函数
的解析式;
(2)若
,求
在
上的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4de79dfe42778bfd6626be8ca825d7a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://img.xkw.com/dksih/QBM/2021/1/26/2644338942271488/2645324136136704/STEM/51a35c05-1af4-44f5-98bc-7cf96e41170e.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38fc988a06df50b731530eb67103a7ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18c9aeed3c8c5a04e48d011c607f9142.png)
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名校
解题方法
4 . 已知函数
,
.
(1)当
时,求该函数的最大值及取得最大值时的x的集合;
(2)是否存在实数a,使得该函数在闭区间
上的最大值为1?若存在,求出对应的a值若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae4a120607497c18c9a7774ce9b3f6cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
(2)是否存在实数a,使得该函数在闭区间
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18c9aeed3c8c5a04e48d011c607f9142.png)
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5 . (1)已知函数
,求函数f(x)的值域;
(2)
,计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6e8c6e5aa027ab28b39b292fe8e2c68.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aff8e8f399db20c51e878b2b4b134793.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ccf0baf06fbfdb3a12e61842e40ca82.png)
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名校
6 . 已知函数
的最小值为
,函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2880d50ef6dcd8e653ff5850fd70878.png)
.
(1)求a的值;
(2)已知
时,
恒成立,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8632296f5897698207b40b4de4fee72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2880d50ef6dcd8e653ff5850fd70878.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae676c936b91af769360c2624f70e532.png)
(1)求a的值;
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c37971a0c63f8f1ec8cac984bd89110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/819a3fc44c3924befe4feae69d5eb837.png)
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2021-01-22更新
|
607次组卷
|
2卷引用:江苏省无锡市2020-2021学年高一上学期期末数学试题
名校
7 . 已知函数
,
.
(1)求
的值域;
(2)求不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b34c9257e3a3d9987e4e96aa9effea94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d998f0f95e1f7020252b159ee52cdd14.png)
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2021-01-16更新
|
170次组卷
|
3卷引用:江西省南昌市第十八中学2019-2020学年高一上学期期末联考数学试题
名校
解题方法
8 . 已知函数
的最小值为
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f32595f17fbe51cb5b27f6a50e83160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e302bac429b3ce3f8436e98ce181c22c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
解题方法
9 . 函数
,求:
(1)函数
的值域;
(2)函数
取到最大值时
的取值集合.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f358c2d77e9c0fcd9000c67b4970fb3.png)
(1)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
2020-12-26更新
|
76次组卷
|
2卷引用:湖南省岳阳市岳阳县第一中学2020-2021学年高一上学期12月月考数学试题
名校
解题方法
10 . 已知奇函数
,函数
,
.
(1)求
的值;
(2)判断函数
在
的单调性,并证明你的结论;
(3)当
时,函数
的最大值恰好为
的最大值,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/528254c30ac0d4dae444fd723dcb9b02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce60ee8fbfaeb3d9b3e3960cbb9220a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49959131bc72287ece3fd2f8cf235a1d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e11f4ca0e7ace69f92130d0525bcdb3.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f7dbb416ec1ff1984a724a4f48bf692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a82a1224e47f31ecdfffd328d5a3ab6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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