1 . 如图所示,已知直线
与
轴的正半轴交于点
,与
轴交于点
,抛物线
经过点
与点
,点
在第三象限内,且
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/19/3351f447-3cbd-44d3-a34e-f1dd1b78d152.png?resizew=162)
(1)当
时,求抛物线的表达式;
(2)设点
坐标为
,试用
分别表示
;
(3)记
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02ebce8b2a915356ed39f36c5bad2ebe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b76d1f6da21caf37e3269223be36531.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/822ba132ca9dd0d4a050659aef3c9b26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb5588240ba9c2cd739b9d6f1f50d389.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/19/3351f447-3cbd-44d3-a34e-f1dd1b78d152.png?resizew=162)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2a51944c720568f35d443589dfc1aa.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0203b006524305c3d8ee0b6c34cd872b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
(3)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bfe82a5bf595c3424c23f37b91449f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8b9ad2fcfff3dd546c5fdbedfe6238.png)
您最近一年使用:0次
2023-05-19更新
|
84次组卷
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2卷引用:云南省昆明市第一中学2023-2024学年高一上学期入学考试数学试题
2 . 如图,在平面直角坐标系中,一次函数
的图象与反比例函数
的图象交于点
和
.
(1)求一次函数和反比例函数的表达式;
(2)请直接写出
时,x的取值范围;
(3)过点B作
轴,
于点D,点C是直线BE上一点,若
,求点C的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/715416015a9634f5eafe3d399987d837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d105b74c40724a7da626e7c42afbf5fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/115a0c87ac14dbb770c95d74d6e26073.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e985f1340c05b4e9cad85db1d54d66d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/9/83538afe-31d2-4a6b-9d2c-bf3dc76edfac.png?resizew=243)
(1)求一次函数和反比例函数的表达式;
(2)请直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f99df1a7b58018125b99578b779342.png)
(3)过点B作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c147f2c9fec76422c5285e2da3394e8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4151e948feebdf7b91fbe739feafa9bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cb83b580d11e18af554f23054c60cf9.png)
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2023-08-05更新
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3卷引用:云南省昆明市云南师范大学附属中学2023-2024学年高一上学期入学考试数学试题
名校
3 . 计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a708c6da619e02dae4163360934bc2cd.png)
______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a708c6da619e02dae4163360934bc2cd.png)
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2021-10-17更新
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2卷引用:云南省大理市大理白族自治州民族中学2023-2024学年高一上学期开学数学试题
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4 . 引发春季传染病的某种病毒的直径是0.000000025,将0.000000025用科学记数法表示为______________ ;
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2卷引用:云南省大理市大理白族自治州民族中学2023-2024学年高一上学期开学数学试题
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5 . 如图,抛物线
与x轴交于A、B两点,点A在点B的左边,与y轴交于点C,点A的坐标为(-2,0),
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/37d989a1-5f4a-43fa-921e-71a81a0e81e7.png?resizew=352)
(1)如图1,求抛物线的解析式;
(2)如图1,点D在直线BC下方的抛物线上运动(不含端点B、C),连接DC、DB,当四边形ABDC面积最大时,求出面积最大值和点D的坐标;
(3)如图2,将(1)中的抛物线向右平移,当它恰好经过原点时,设原抛物线与平移后的抛物线交于点E,连接BE.点M为原抛物线对称轴上一点,N为平面内一点,以B、E、M、N为顶点的四边形是菱形时,直接写出点N的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8352b2e643a7ce605334f1b0e572bfb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/604ca48def96501f98571083e0181911.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/37d989a1-5f4a-43fa-921e-71a81a0e81e7.png?resizew=352)
(1)如图1,求抛物线的解析式;
(2)如图1,点D在直线BC下方的抛物线上运动(不含端点B、C),连接DC、DB,当四边形ABDC面积最大时,求出面积最大值和点D的坐标;
(3)如图2,将(1)中的抛物线向右平移,当它恰好经过原点时,设原抛物线与平移后的抛物线交于点E,连接BE.点M为原抛物线对称轴上一点,N为平面内一点,以B、E、M、N为顶点的四边形是菱形时,直接写出点N的坐标.
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2021-10-17更新
|
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2卷引用:云南省大理市大理白族自治州民族中学2023-2024学年高一上学期开学数学试题
20-21高一·全国·单元测试
6 . 关于x的一元二次方程x2﹣2
x+m=0有两个不相等的实数根,则实数m的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
A.m<3 | B.m>3 | C.m≤3 | D.m≥3 |
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名校
7 . 如图,抛物线
与
轴交于
点,过点
的直线与抛物线交于另一点
,过点
作
轴,垂足为点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/20/19ff3fb5-1e44-4ec7-912f-8e2528bd8d1f.png?resizew=186)
(1)求直线
的函数关系式;
(2)动点
在线段
上从原点出发以每秒一个单位的速度向
移动,过点
作
轴,交直线
于点
,交抛物线于点
.设点
移动的时间为
秒,
的长度为
个单位,求
与
的函数关系式,并写出
的取值范围;
(3)设在(2)的条件下(不考虑点
与点
,点
重合的情况),连接
,
,当
为何值时,四边形
为平行四边形?问对于所求的
值,平行四边形
能否为菱形?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd400eabbae8c74483d4749750e7c7a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b45db8dd8768994af51206565379fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df49179dbfbc8e207aa92fd72060fba1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/20/19ff3fb5-1e44-4ec7-912f-8e2528bd8d1f.png?resizew=186)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0522607eeb42a499c0f5b040bbdd42e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)设在(2)的条件下(不考虑点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dae7f709cd4bf123f329605b2f9ea679.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dae7f709cd4bf123f329605b2f9ea679.png)
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2020-11-02更新
|
308次组卷
|
4卷引用:云南省昆明市云南师范大学附属中学2023-2024学年高一上学期入学考试数学试题
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8 . 若双曲线y=
上任意一点P到两坐标轴的距离分别为d1,d2,则
=( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf35027e76f8ea593f82023973d4aba3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a1f2f816a51069ca88b1665053c53e.png)
A.![]() | B.1 | C.2 | D.3 |
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9 . 甲、乙两人从相距600m的A,B两地同时出发,相向而行,甲带了一只狗和他一起出发,甲每分钟行40m,乙每分钟行60m,狗每分钟行200m,狗出发后奔向乙,遇乙后便立即折回奔向甲,遇甲后又马上折回奔向乙,这样的方式一直进行到甲与乙相遇为止,则从出发到甲乙相遇过程中狗共跑的路程是( )
A.300m |
B.600m |
C.900m |
D.1200m |
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10 . 求值:
为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d838080ca081211fa70b25b913511dc.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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