1 . 已知某抽气机每次可抽出容器内空气的
,要使容器内的空气少于原来的
,则至少要抽的次数是(参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beddb9806191a43e6c6b194300981f11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/366e2149b0472b3afe27cd9ca30ab204.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a49dc2827f437b3a1e7cbc25c680093c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 已知幂函数
的图象经过点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ba42e93ac9962f8ebfdd2efbcd934c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91b3adfdf70011716638ea467f631e68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed8f86bc1334b82a793f854c5412a2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ba42e93ac9962f8ebfdd2efbcd934c3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
3 . 已知集合
,则
中元素的个数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af321842aa04f0f84dbfae1e55dca43d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-01-16更新
|
512次组卷
|
2卷引用:湖北省荆门市2019-2020学年高一上学期期末数学试题
名校
4 . 已知函数
满足
.
(1)设
,判断函数
的奇偶性,并加以证明;
(2)若不等式
对任意
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f91b8dab0db4cd10d86ba6bff1e7aef.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b1925c29baf293097fe73f03bbaf9c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a109be15a9fc1d747cbc694f0dbd1e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a59691f15c5d860e2ec0d27533b2d354.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
2020-01-16更新
|
819次组卷
|
6卷引用:重庆市七校(渝北中学、求精中学)2019-2020学年高一上学期期末联考数学试题
5 . 已知函数
是奇函数.
(1)求
的值;
(2)判断并证明函数
的单调性;
(3)若对任意的
,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/636900fac564d7d338cb6d5f0b118b82.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)判断并证明函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(3)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e47c8cbf6a756f1435505da2bdb10389.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/738f29ebc272155a4dda6fa37aa4b0c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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名校
6 . 已知集合
,
.
(1)当
时,求
;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61241dcbf7b8710b40fac16129710bb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca1d48db7a6d8ea8e2584efa411756a.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdbbe46a98a8fdebfc46fcbc45dc88e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2020-01-15更新
|
934次组卷
|
6卷引用:湖北省宜昌市部分示范高中教学协作体2019-2020学年高一上学期期末联考数学试题
7 . 若
,
,
,则
、
、
的大小关系是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8078eea9aabb70b6d1e5257f91771db1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58ced3b5ea4e755de43a5059c1747e28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69c4c163a464fd139620f444de6fe2d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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8 . 函数
的定义域是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4733274a3cf7c592113eb04fdc09bf5d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-01-15更新
|
564次组卷
|
7卷引用:湖北省宜昌市部分示范高中教学协作体2019-2020学年高一上学期期末联考数学试题
名校
9 . 已知函数
为偶函数.
(1)求
的值;
(2)若方程
有解,求实数
的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f65f8ff950d3897f914c96abac10195.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92bbbdb96dc993e9fccc588abcb5356c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2020-01-15更新
|
532次组卷
|
4卷引用:湖北省武汉市武昌区2019-2020学年高一上学期期末数学试题
名校
10 . 美国对中国芯片的技术封锁,这却激发了中国“芯”的研究热潮,中国华为公司研发的
、
两种芯片都已获得成功.该公司研发芯片已经耗费资金
千万元,现在准备投入资金进行生产,经市场调查与预测,生产
芯片的毛收入与投入的资金成正比,已知每投入
千万元,公司获得毛收入
千万元;生产
芯片的毛收入
(千万元)与投入的资金
(千万元)的函数关系为
(
与
都为常数),其图象如图所示.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/28/8e64b3dd-abdf-4312-9439-b6e67a7dae6f.png?resizew=230)
(1)试分别求出生产
、
两种芯片的毛收入
(千万元)与投入资金
(千万元)函数关系式;
(2)现在公司准备投入
亿元资金同时生产
、
两种芯片,设投入
千万元生产
芯片,用
表示公司所获利润,当
为多少时,可以获得最大利润?并求最大利润.(利润
芯片毛收入
芯片毛收入
研发耗费资金)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a09b5f459f48a235b5152eab56aeaecd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e530a96077c25d1b2d491f7e6e28bdac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/28/8e64b3dd-abdf-4312-9439-b6e67a7dae6f.png?resizew=230)
(1)试分别求出生产
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)现在公司准备投入
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6219f0c257aaecd6efb927710c132b74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c8d20bc7af01e5f57036613d19447b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bfc339cf6dd66599db64fa3fa44e608.png)
您最近一年使用:0次
2020-01-14更新
|
1072次组卷
|
9卷引用:【市级联考】湖北省黄冈市2018-2019学年高一上学期期末考试数学试题