解题方法
1 . 已知
,则
取到最小值时,
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f09b7e6af63f4c797a7ae3345af8d421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3910a0f217d8109b9467f740fc84a73d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b0113fd4c7d157757571f9a009e02af.png)
A.16 | B.12 | C.9 | D.8 |
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2021-01-05更新
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101次组卷
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2卷引用:重庆市三峡名校联盟2020-2021学年高一上学期联考数学试题
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解题方法
2 . (1)已知集合
求,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
(2)记![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18471e03c6f1fbca6246a02d0a40d435.png)
,
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23ce913ce5046c07c114b5171545e19e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18471e03c6f1fbca6246a02d0a40d435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab6a2f46ec6423e92c421ee4ab52b306.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdbbe46a98a8fdebfc46fcbc45dc88e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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3 . (1)化简:
;
(2)计算:
;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f2ef4770455d65e1972fa80ff9cd0d2.png)
(2)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34fbdf02f370d9b5b05556328cc3fefb.png)
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4 . 已知集合
则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3ab54b68bb4ca73af28c3f64b7c983e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
5 . 为了振兴乡村,打好扶贫攻坚战,某企业应当地政府号召,在其扶贫基地建厂,利用当地原材料优势生产某种产品,已知年固定成本为50万元,年变动成本
(万元)与产品产量
(万件)的关系为
,产品售价为10.5万元/万件,该企业利用其产业链优势,可将该厂产品全部收购
(1)写出年利润
(万元)关于年产量
(万件)的函数解析式;
(2)当年产量为多少时,该厂年利润最大?最大利润为多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23c4fe91d3171e42ee32ace683dcdfaa.png)
(1)写出年利润
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)当年产量为多少时,该厂年利润最大?最大利润为多少?
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2021-01-02更新
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5卷引用:四川省南充市营山县第二中学2022-2023学年高一上学期第三次月考数学试题
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6 . (1)计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6827414e22e57b56f35aebd351929c3a.png)
(2)化简:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6827414e22e57b56f35aebd351929c3a.png)
(2)化简:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5474c578a86b7d58b06821bcd689bf17.png)
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7 . 给出的下列命题:
①已知
,
,
,则
.
②若正数
,
满足
,则
.
③当
时,函数
的零点个数为0个.
④若直线
与函数
,(
且
)的图像有两个公共点,则
的取值范围为
.
其中正确的是______ .(把你认为正确的结论的序号全写上)
①已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/116a4f1c8b51d1993e6d7c054e2ed5d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29bfdb5f50c0514b2b7cb83b2c29407b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/952b946898ff8cc8a6b00b19c6abbe6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fbd27b6b4143c730ab9d36393a5fe14.png)
②若正数
![](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/6d8e69b580179be4cd530fb1879b494e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d0c36fdc8eb94cc4df50b47979d297.png)
③当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f3e39667944e047592fa84dec4da0d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcf7cb1b607211d63def69341ba37412.png)
④若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f32fca7406493e4e31c5b8e0c86c60f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a10b9a9f9d95cdbd4befab8f75f04b88.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/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
其中正确的是
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8 . 已知集合
,函数
的定义域为
.
(1)求
;
(2)已知集合
,若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0670a822e569e36d25a4fd15d69e1ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ac19774a8dbc4056ab91ec60af293e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/126fdf5a6e9b2d7c23d57798318da453.png)
(2)已知集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae42d35f2787b85190834e2515a3dc39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c29cd450d0feaea9acb27a60430f4a3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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9 . 设全集为
,集合
,
.求
(1)
;
(2)已知
,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/a0f69a18d8e91735f9eaef833afefed6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1be2aa69d4a0c02c4b100665059ce5e.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9228b976afe20f6cef8b9c20a6a08f7.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab1dd6b0b695276e85d5db8ea4d8274c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e544b1304a6bbc87283cf741f134cebe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2020-12-31更新
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73次组卷
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2卷引用:四川省乐山市峨眉第二中学校2020-2021学年高一上学期12月月考数学试题
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10 . 若集合
,
.
(1)若全集
,求
;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd0a2d68c1fc34a80960df65f3d9102c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecb91f9adc757552de3dc9542b50ad93.png)
(1)若全集
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a64dc61989ca50b9ee19d835c4ed268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c093cbde3d3472d1f7f2b0dff2bc4881.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ceb1f338fa60976229d7ec6531b626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2020-12-26更新
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4卷引用:【全国百强校】四川省棠湖中学2018-2019学年高一上学期第三次月考数学试题