1 . 如图,已知
、
为平面直角坐标系
内两点,二次函数
的顶点
在
内(包括边界),点
、
到点
的最短距离分别为
、
,则
的值是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6d9a25d20b86c2583f6c071091e8e3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff241041fc97615819fd20b642b27302.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/281185bcf93f057eebc532ea5c685e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5edf900c810371fb21297c15f86d8743.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31ac1def558351e2e3ed1235c570530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/567dd134da09fa045667436518222a41.png)
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2 . 已知正比例函数
.
(1)若点
和点
为函数图象上的两点,且
,求a的取值范围;
(2)若函数的图象经过点
.
①求此函数解析式;
②如果x的取值范围是
,求y的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d472af0b8bbdabbfecae88c5836c716.png)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c663466d641b5fdfef1e529d6c330ecf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/166afeb61d5a80366a8ae29c912cd644.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e64461077e98e97043af129496bf6fd.png)
(2)若函数的图象经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/257dd4ddacb8667a761be897568f3674.png)
①求此函数解析式;
②如果x的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eae51da9c4a1563f7a7c6ab949811a40.png)
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2024-04-11更新
|
339次组卷
|
2卷引用:江苏省南通市通州区通州区平潮初级中学2023-2024学年八年级下学期联合月考数学试题
名校
3 . 在平面直角坐标系
中,已知点
,其中
,直线
与
轴交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/731238d9-87b6-41e4-90c6-da7bbb5cd412.png?resizew=299)
(1)当
时,求
的面积;
(2)若
的面积是
面积的2倍,求出
的值;
(3)若a、m的值发生变化,点B到直线
的距离最大时,直接写出点B的纵坐标的值______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a185f55f67b3af73660ed823fb970cac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/731238d9-87b6-41e4-90c6-da7bbb5cd412.png?resizew=299)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe0602fdcc56de75c0a1864246ac8ada.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/173bc7a36757d77f01213411edd25241.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebb49c1fd097c5aafc0c9080449f5fc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)若a、m的值发生变化,点B到直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
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4 . 计算:
(1)
;
(2)
;
(3)
;
(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ab9c135aa2365d345a5c64c8352731b.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aa535203d65d2158fb444d0aed25d81.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb61a982a98950d445dbb419983d1086.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/173158793d6401c024a282b9582b4d74.png)
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5 . 如图,
的半径是2,
是
的内接三角形.
(1)请在图中用无刻度的直尺和圆规作图:在
上找一点D,使
;(不写作法,保留作图痕迹)
(2)在(1)的条件下,连结
、
、
,四边形
是平行四边形,则
_______
;
、
、
围成的封闭图形的面积是_______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/9/a2e64f21-f992-4375-a5da-2d7cc834a7cf.png?resizew=220)
(1)请在图中用无刻度的直尺和圆规作图:在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30849dcdfa241db5e78d047515249a0d.png)
(2)在(1)的条件下,连结
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ab158dd9e96abcae0f115f54fa66c5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4db07c6ce6c8b0e96a3470c6a3491334.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
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6 . 如图,在平面直角坐标系中,平面内有一动点
,定点
、
,连结
._________ ;(填“是”或“否”)
(2)若点P只是在第一象限内运动,过点P作
于Q,当
取得最大值时,点P的坐标是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae5b3f682841d4bf4a46fcd1ba5949a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0d256036d52b784b8c68bfc8db69d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6938eeb65411eeac15e140cf1db99773.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)若点P只是在第一象限内运动,过点P作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d84733f9dc908ceb11459cc2aed580ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
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2024-04-08更新
|
71次组卷
|
2卷引用:江苏省无锡市宜兴市桃溪中学2023-2024学年九年级下学期第一次月考数学试题
7 . 民之所盼,我之所呼.人民网发布了2月份参与全国两会的第22次调查人数共计超过581万人次,其中数据“5810000”用科学记数法可表示为 ______ .
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2024-04-08更新
|
66次组卷
|
3卷引用:江苏省无锡市宜兴市桃溪中学2023-2024学年九年级下学期第一次月考数学试题
8 .
的
次幂是______ ,
是______ 的平方数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/459cc36d02d31815ba9f2d05e130e0cd.png)
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9 . 在四边形
中:
请你用小明、小丽、小亮中任何两人所给出的事项作为条件,另一个事项作为结论,构成一个真命题;并证明你所构建的是真命题.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/ed2dd795-0695-4312-be5c-0f6181c650ff.png?resizew=347)
条件: ,结论:
证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
请你用小明、小丽、小亮中任何两人所给出的事项作为条件,另一个事项作为结论,构成一个真命题;并证明你所构建的是真命题.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/ed2dd795-0695-4312-be5c-0f6181c650ff.png?resizew=347)
条件: ,结论:
证明:
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2024·江苏南京·一模
名校
10 . 题目:
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/29/25f5d713-6e91-45a3-bf4e-afa5ba668678.png?resizew=381)
(1)小明对上述题目的解答如图①所示(隐去了弧),他写的文字说明是:
是高,
,
,求证:矩形
即为所作;
(2)如图②,小丽只会作矩形
,除了顶点
不在
边上外,其他都已经满足了题目的要求,她想通过图形的变换将矩形
变化为要求作的矩形.请按小丽的思路完成作图,并描述从矩形
到矩形
的变换过程.
已知:如图,![]() 求作:矩形 ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/29/25f5d713-6e91-45a3-bf4e-afa5ba668678.png?resizew=381)
(1)小明对上述题目的解答如图①所示(隐去了弧),他写的文字说明是:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c818f931454b235aa73e98e9f9657f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66614983f17b36306a033aa0e7a3a0fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
(2)如图②,小丽只会作矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4506a86be2e805aed35d6edea723fbaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/522230546d4b802094e86ceb48c2ba38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4506a86be2e805aed35d6edea723fbaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4506a86be2e805aed35d6edea723fbaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
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