名校
1 . 函数
中自变量
的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e575925106069560a5f218df5ce0051.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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2 . 如图,直线
∥
,直线
分别交
,
于点
,
,
的平分线
交
于点
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.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/e470b9b1ab6b8db7d19dc1e48ad6f09b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907d5147cea4c9ce855074864fe54506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/317068b7feee03bb7c8c33bf9da81fe8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b09d8841cf886e752f7e1adcce8ff65.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/26/637ac529-7bfa-477b-bac2-2599f1f38f6e.png?resizew=191)
A.70° | B.110° | C.120° | D.140° |
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3 . 如图,平行四边形
的面积为
,
,
与
交于点
,分别过点
,
作
,
的平行线相交于点
,点
是
的中点,点
是四边形
边上的动点,则
的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8da45c443af7994a26ffa9d8894e7262.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aabdde5c06a238f7623344f13755fa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d000a9d441370a43debf5845f5f41142.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4505508b3e36db64a207dcdaf8eb22dc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/26/a95ed296-e52d-4217-804b-5fc72f46b7f1.png?resizew=177)
A.1 | B.![]() | C.![]() | D.3 |
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4 . 已知一个正多边形的边心距与边长之比为
,则这个正多边形的边数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
A.4 | B.5 | C.6 | D.7 |
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5 . 如图,在
中,
,以
为直径的
与
交于点
,点
是
的中点,连接
,
.
(1)求证:
是
的切线;
(2)若
,
,求
的长;
(3)在(2)的条件下,点
是
上一动点,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/27/a9f701a1-6500-44fb-8749-a45b587e7f41.png?resizew=145)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377b5f7197e5bd1afeea4d931307956a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/583effa35880ba5704dfc4ae4e48a6fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(3)在(2)的条件下,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a13ec9a812274ad0839f20ba17348687.png)
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6 . 李叔叔批发甲、乙两种蔬菜到菜市场去卖,已知甲、乙两种蔬菜的批发价和零售价如下表所示:
(1)若他批发甲、乙两种蔬菜共
花180元,求批发甲、乙两种蔬菜各多少千克?(列方程或方程组求解)
(2)若他批发甲、乙两种蔬菜共
花
元,设批发甲种蔬菜
,求
与
的函数关系式;
(3)在(2)的条件下,全部卖完蔬菜后要保证利润不低于176元,需要至少批发甲种蔬菜多少千克?
品名 | 甲蔬菜 | 乙蔬菜 |
批发价/(元![]() | 4.8 | 4 |
零售价/(元![]() | 7.2 | 5.6 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e64b61dc10ae2503c1f533e7ec4fe250.png)
(2)若他批发甲、乙两种蔬菜共
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b51a293b9810a569e5240db168296044.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d830b69a590811ca9cd981f047aba35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(3)在(2)的条件下,全部卖完蔬菜后要保证利润不低于176元,需要至少批发甲种蔬菜多少千克?
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7 . 观察下列关于自然数的等式:
(1)
①
(2)
②
(3)
③
根据上述规律,写出你猜想的第
个等式(用含
的式子表示):______ .
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/676ea1b90c909d2cce4624bc05d991d5.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b093206b2c520d106b178b4fdcd0db13.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/397afc86d7b0034c4d040c5ffad35969.png)
根据上述规律,写出你猜想的第
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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8 . 已知关于x的方程
有两个实数根
,
(1)若
时,求
的值;
(2)若
,求实数m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bda17b1c9496e2c8eedbf63eb939ef2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0db2c49919467a2e14540f2aabd05cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20fef976a0230bdfe3bc758e93987ba8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6483c4c4e2815a2b35e87323882106bc.png)
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2023-08-10更新
|
454次组卷
|
4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
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上海市徐汇中学2022-2023学年高一上学期期中数学试题四川省内江市第六中学2023-2024学年高一上学期入学考试(精英班)数学试题(已下线)期中真题必刷常考60题-【满分全攻略】(沪教版2020必修第一册)
9 . 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
|
133次组卷
|
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
10 . 为进一步落实“德、智、体、美、劳”五育并举工作,某中学以体育为突破口,准备从体育用品商场一次性购买若干个足球和篮球,用于学校球类比赛活动.每个足球的价格都相同,每个篮球的价格也相同.已知篮球的单价比足球单价的2倍少30元,用1200元购买足球的数量是用900元购买篮球数量的2倍.
(1)足球和篮球的单价各是多少元?
(2)根据学校实际情况,需一次性购买足球和篮球共200个,但要求足球和篮球的总费用不超过15500元,学校最多可以购买多少个篮球?
(1)足球和篮球的单价各是多少元?
(2)根据学校实际情况,需一次性购买足球和篮球共200个,但要求足球和篮球的总费用不超过15500元,学校最多可以购买多少个篮球?
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2023-08-05更新
|
118次组卷
|
2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