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1 . 若集合
,则集合
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/239b6977dd3ed2a5ca518c0d00a9a957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94b0f880d841be659498f562743641fc.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 已知函数f(x)=5-log3x,x∈(3,27],求f(x)的值域
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3 . 若函数
是指数函数,试确定函数
在区间
上的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/344ed851332e639a6100ac107c6525bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b372d355a9f600f106d094e4d87e9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9899a02d8bdd3b2d3b81181730762df1.png)
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4 . 下列函数中,值域为
的函数是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8938db94f49dcbe0c383fba0241bb0da.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930d57c6a1f277dab7478f120ee1f1a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37b93abe2a497b7ef3cb8c1b9de8492e.png)
(1)当
时,求
的值域;
(2)若
在
上能取得最小值
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930d57c6a1f277dab7478f120ee1f1a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37b93abe2a497b7ef3cb8c1b9de8492e.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adb962de639249d7c01d713c0eadc7b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/314b8df75d68aee091739dede8db6de5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/602baac86c2b1668ecdfadc8a5948885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2019-12-18更新
|
321次组卷
|
2卷引用:安徽省黄山市徽州区第一中学2019-2020学年高一上学期期中数学试题
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6 .
,
,
(1)求
的解集
;
(2)当
时,求
的值域,并求函数取得最值时
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6624c6d63b6d2c16f683068c38e5583.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/679cf287d30110f97268508a18a16c09.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6acb0f1ac694dd177e99fc385f23318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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7 . 函数
(
且
)在区间
上的值不大于2,则函数
的值域是.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d76ee3b131ecd6aa1aacf7fb7b3eb15.png)
![](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/4ead3fdcb8fe8f5eb3dbe7d96cabc28b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a95ee518bc26e085f1ee9b495ce56c11.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2019-12-08更新
|
325次组卷
|
3卷引用:福建省漳州市第八中学2019-2020学年高一上学期期中数学试题
福建省漳州市第八中学2019-2020学年高一上学期期中数学试题福建省平和一中、南靖一中等五校2019-2020学年高一上学期期中联考数学试题(已下线)专题4-3 对数函数性质归类(1) - 【巅峰课堂】题型归纳与培优练
8 . 下列函数中,值域为[0,+∞)的是( )
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 函数
,
的值域是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12be206d66e65eb92ef08bad8cd8f71d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3948bd97698b4efe8e929de5b7227efa.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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10 . 已知函数
的定义域为
.
(1)若
,求
的取值范围;
(2)求
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e046dccb81d630ce1cbd3b7c4f0cf91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e86922414fb059a339800a7679c62508.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fe8b469db729648cf3326e875865a1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
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