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1 . 已知二次函数
的图象上有两个不重合的点
,若
,则点
的轨迹是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bebe4effa790eb7d86d359aecbc051d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5ec6f5b958b3d00befdc2b2981774e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1292c47f62023b747f1a4bd615c75284.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82aaa597a5aa6176863eda3fdf83e181.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2 . 《九章算术》是人类科学史上应用数学的最早巅峰,是一部问题集,全书分为九章,共收有246个问题,每个问题都有问、答、术三部分组成,内容涉及算术、代数、几何等诸多领域,并与实际生活紧密相连,充分体现了中国人的数学观和生活观.书中第九卷勾股部分记录了这么一个问题:问:今有圆材埋在壁中,不知大小,以锯锯之,深一寸,锯道长一尺,问径几何?术曰:半锯道自乘,如深寸而一,以深寸增之,即材径.如图,术曰所给出的求解公式为:
,则答曰( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/7/57d4f5d3-0270-4853-8090-b292df6efdc2.png?resizew=176)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dd0e0872f6998260f1d8467744d856a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/7/57d4f5d3-0270-4853-8090-b292df6efdc2.png?resizew=176)
A.二尺六寸 | B.二尺五寸 | C.一尺三寸 | D.一尺二寸 |
您最近一年使用:0次
2022-09-09更新
|
431次组卷
|
5卷引用:四川省达州市开江县开江中学2022-2023学年高三上学期入学考试数学(文)试题
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3 . 已知双曲线
过点
、点
和点
,且
,则
、
和
的大小关系是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a82c59fab56271bf8e3e506bec2e0452.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56720e2f2b0ddd72156da495923698da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2852ae85cfcc804b3192ea8543c88938.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1947266946e35d8f997e6572c27ac6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ed2edae42fa90deb0e4f3d24589a78b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9314bd1d7a6e070f4f2428f9a321804e.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2022-09-08更新
|
81次组卷
|
2卷引用:黑龙江省哈尔滨师范大学附属中学2022-2023学年高一上学期开学摸底考试数学试题
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4 . 已知抛物线
,当
时,
;当
时,
.下列判断:
①
;②若
,则
;③已知点
在抛物线
上,当
时,
;④若方程
的两实数根为
,则
.其中正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b288ab1b2e56fd8a11d0a766d9fe0657.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a57458464618fcf619375a93d3c66d69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a57458464618fcf619375a93d3c66d69.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3634f7607140d0751fc020f701a1270e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e4cc00c283519973f7f8e1274b5c733.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc863004a6fedab9a38c96e7dabe90b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd931b890715d1b8c079c3df760fb782.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b288ab1b2e56fd8a11d0a766d9fe0657.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c959f66cc10bf1420eac249e74d2009.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d83cb3b6dacb13f2b792e7c14a8f84be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d854a1e025a926f5d1d7e00aa5c121a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd8ca3aa2d1ba52e82613d0d65d800e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0c556b35e2216aeb5b7d8b1b4c140da.png)
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
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5 . 某药店在今年6月份购进了一批口罩,这批口罩包括一次性医用外科口罩和N95口罩,且两种口罩的只数相同,其中一次性医用外科口罩花费1600元,N95口罩花费9600元.已知一次性医用外科口罩的单价比N95口罩的单价少10元,那么一次性医用外科口罩的单价为多少元?设一次性医用外科口罩单价为x元,则列方程正确的是( )
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2022-09-01更新
|
62次组卷
|
2卷引用:安徽省六校教育研究会2022-2023学年高一上学期入学考试数学试题
6 . 下列计算正确的是( )
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
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7 . 如图,点
在正方形
边
上,四边形
也是正方形,已知
(
为常数,且
),则
的面积( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/30/720b0286-187e-48eb-b50c-5d9e543da2a0.png?resizew=109)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/113db66e9d1ee1ce0dec62f2ffe7feb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663a61ad241d5d874c9a9362f0ee917c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54fb6e81fee5674c3e26a65e58cc506d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/30/720b0286-187e-48eb-b50c-5d9e543da2a0.png?resizew=109)
A.只与![]() | B.只与![]() |
C.只与![]() | D.无法确定 |
您最近一年使用:0次
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8 . 如图,已知
为直角三角形,分别以直角边
为直径作半圆
和
,以
为直径作半圆
,记两个月牙形阴影部分的面积之和为
,
的面积为
,则
与
的大小关系为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/31/47b395b0-a83d-47a8-b5fb-985c08710b5d.png?resizew=220)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ed1fce01430ae31294c29d626626f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53bdef2e7a7929ad6190302ab44c46c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81166ad08996b441effff746335fdb87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cf468f5132e14ee1d8cc766808b11af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bb16ad1f14ec1c26b7a651308294724.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b55dad255d142a5f50540ba6e9eb8737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bb16ad1f14ec1c26b7a651308294724.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/31/47b395b0-a83d-47a8-b5fb-985c08710b5d.png?resizew=220)
A.![]() | B.![]() |
C.![]() | D.不能确定 |
您最近一年使用:0次
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9 . 如图,已知双曲线
经过直角三角形
斜边
的中点
,与直角边
相交于点
.若
的面积为3,则
值是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/31/b97df57b-5c7f-4b9f-b496-f85376e48e7c.png?resizew=137)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44222753dc48927f50f2582955bb4d99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4819c39c281427826e1b3f7a4c2b720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebcc52a06d806fde891e09a0a389fcd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/31/b97df57b-5c7f-4b9f-b496-f85376e48e7c.png?resizew=137)
A.3 | B.2 | C.4 | D.![]() |
您最近一年使用:0次
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10 . 某商店原来平均每天可销售某种水果150千克,每千克盈利7元,为了减少库存,经市场调查,这种水果每千克降价1元,那么每天可多售出20千克,若要平均每天盈利960元,则每千克应降价多元?设每千克降价
元,则所列方程是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次