二次函数
满足
且
.
(1)求
的解析式;
(2)当
时,不等式
恒成立,求实数m的取值范围.
(3)设函数
在区间
上的最小值为
,求
的表达式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c292ad5ab432ba87d945d952ae84d2b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51eb2613dda00677d447c986cac505bc.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9d0d0e17c4af632f8ebf3e07a2514a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2a7a07624cc738da030ed9f2ca79e43.png)
(3)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db3c4076e4cb69e01dd54775c102397b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b3ae7e5228fd1acb0d46f6941143a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b3ae7e5228fd1acb0d46f6941143a7.png)
21-22高一上·江苏·单元测试 查看更多[3]
(已下线)专题12 《函数概念与性质》中的恒成立问题(2)-2021-2022学年高一数学上册同步培优训练系列(苏教版2019)天津市河北区2023-2024学年高一上学期期中数学试题(已下线)第三章 函数的概念与性质(单元检测)-【同步题型讲义】(人教A版2019必修第一册)
更新时间:2022-04-05 13:25:12
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【推荐1】海安市江淮文化园是以江淮历史文化为底蕴的人文景观,整个园区由白龙故里、先贤景区、凤山书院、中国名人艺术馆群四大景区组成.据估计,其中凤山书院景区每天的水电、人工等固定成本为1000元,另每增加一名游客需另外增加成本10元,凤山书院景区门票单价x(元)(x∈N*)与日门票销售量
(张)的关系如下表,并保证凤山书院景区每天盈利.
(1)在坐标图纸中,根据表中提供的数据,描出实数对
的对应点,并确定y与x的函数关系式;
(2)求出
的值,并解释其实际意义;
(3)请写出凤山书院景区的日利润
的表达式,并回答该景区怎样定价才能获最大日利润?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec8a14649950eb1c74a1a1af244fbf8f.png)
x | 20 | 35 | 40 | 50 |
y | 400 | 250 | 200 | 100 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c5fd03052304503a4ecac52539beec1.png)
(2)求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3852d686b813b122a9efd17798ded147.png)
(3)请写出凤山书院景区的日利润
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f6bfdb24ecf5da863405c2b40936ff9.png)
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【推荐2】(1)已知
,求
的解析式;
(2)已知
是一次函数,且满足
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d28ac660e96a97fd0458327f6e3a70d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/253708c192477400b20665a1551ba672.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a155296325d68843a11b28dd47bd3204.png)
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【推荐1】已知函数
.
(1)若
,求实数
的值;
(2)当
时,求
在区间
上的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/806e1946ea89d70c41c2e85b42bfb1ab.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87e04b4cd16224102ef696222caa56ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5432187d1c042787433b7633292d00fe.png)
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【推荐2】设函数
区间
上的最小值为
.求:
(1)求
的解析式;
(2)求
的最大值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cb4b18d9a64771883d87596c57cb6b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d188ec2580e273ce87e51653a2177ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b3ae7e5228fd1acb0d46f6941143a7.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b3ae7e5228fd1acb0d46f6941143a7.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b3ae7e5228fd1acb0d46f6941143a7.png)
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【推荐1】设二次函数
满足条件:①当
时,
的最大值为0,且
成立;②二次函数
的图象与直线
交于
,
两点,且
.
(1)求
的解析式;
(2)求
的解集;
(3)求最小的实数
,使得存在实数
,只要当
时,就有
成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c43c6dbeab3ca3c3d1ec292dafebd8f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02e9a9ad236288e670ea7d944cf44e87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd24f3c4bc9f9a75d4b28630bb630d2b.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/57dfc9d1109fe41145cc892b5702d9fb.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b8254191c1a35c31aaf03c6410deacf.png)
(3)求最小的实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c745e8f00b624bc413e7c77311053179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f62bdb1b93999bce4a0808eb64f4ed76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2fd48e9eda4f01dfcc017d19c8cc997.png)
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【推荐2】二次函数
满足
.
(1)求
的解析式;
(2)解关于
的不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f6bfdb24ecf5da863405c2b40936ff9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c59207fb65f8d6001f226da66af38c94.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f6bfdb24ecf5da863405c2b40936ff9.png)
(2)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e97a2f429d987b70e18d6bf1bc20861c.png)
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【推荐3】已知二次函数
满足:
,
,且该函数的最小值为1.
⑴ 求此二次函数
的解析式;
⑵ 若函数
的定义域为
=
.(其中
). 问是否存在这样的两个实数
,使得函数
的值域也为
?若存在,求出
的值;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/2011/11/28/1570365091749888/1570365096738816/STEM/8b39af981c974f5ea92ef01d02a7c19e.png)
![](https://img.xkw.com/dksih/QBM/2011/11/28/1570365091749888/1570365096738816/STEM/40772e3e33064e6195b664dbf19ebab9.png)
![](https://img.xkw.com/dksih/QBM/2011/11/28/1570365091749888/1570365096738816/STEM/3c78161fbf7541c79233c9da53ffed18.png)
⑴ 求此二次函数
![](https://img.xkw.com/dksih/QBM/2011/11/28/1570365091749888/1570365096738816/STEM/8b39af981c974f5ea92ef01d02a7c19e.png)
⑵ 若函数
![](https://img.xkw.com/dksih/QBM/2011/11/28/1570365091749888/1570365096738816/STEM/8b39af981c974f5ea92ef01d02a7c19e.png)
![](https://img.xkw.com/dksih/QBM/2011/11/28/1570365091749888/1570365096738816/STEM/9530922510b7433b861861e6cd083e7a.png)
![](https://img.xkw.com/dksih/QBM/2011/11/28/1570365091749888/1570365096738816/STEM/376336d6abac4196b5d10ea2aa352b98.png)
![](https://img.xkw.com/dksih/QBM/2011/11/28/1570365091749888/1570365096738816/STEM/04372bc257bc4cfa96c12b343edf9b43.png)
![](https://img.xkw.com/dksih/QBM/2011/11/28/1570365091749888/1570365096738816/STEM/2c988e756a214a608595f29b04f916a6.png)
![](https://img.xkw.com/dksih/QBM/2011/11/28/1570365091749888/1570365096738816/STEM/8b39af981c974f5ea92ef01d02a7c19e.png)
![](https://img.xkw.com/dksih/QBM/2011/11/28/1570365091749888/1570365096738816/STEM/9530922510b7433b861861e6cd083e7a.png)
![](https://img.xkw.com/dksih/QBM/2011/11/28/1570365091749888/1570365096738816/STEM/2c988e756a214a608595f29b04f916a6.png)
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【推荐1】已知函数
.
(1)当
时,若
,且对任意的
,都存在
,使得
成立,求实数a的取值范围;
(2)当
时,求x的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fda04853a2e7c51623900e775a0b17.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/657be2097b02b0908d4383341a129216.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f7dbb416ec1ff1984a724a4f48bf692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ea847ac3dc234b7892744e0f3af2feb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/012ab86de84bda00c8dcdc2b969dd8ee.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/579e1ded85cd7ba9859ccbcd68db8c39.png)
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【推荐2】已知函数
,函数
.
(1)当
时,求
时
的最大值;
(2)若
在
恒成立,求
的取值范围;
(3)当
时,函数
在
有两个不同的零点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e7a487ef6bcc9bf166e14bb7d8fc0b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a82f36ccbc2c7b8d9bd3aeb7a4cdf123.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1376168658dbe7f5b7f4d75fb1db545a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f36f7ab55b63c08280a41fb64366b819.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec3b4dd2bd4bec99d3a930438cd7cc69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c693cb1ea57455814d1d7c72a7d863b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c7b69e93488fcd2a195cb9793e94fc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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