名校
1 . 在平面直角坐标系
中,已知抛物线
.
(1)求抛物线的顶点坐标(用含t的代数式表示);
(2)点
,
在抛物线上,其中
,
.
①若
的最小值是
,求
的最大值;
②若对于
,
,都有
,求t的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6483bc6fcf166cd1a4c8cc88cb1329f.png)
(1)求抛物线的顶点坐标(用含t的代数式表示);
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a271c22e34d4df61636ab3052a8e0ecc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d265a9d87b531b4508d0fcc0f623674.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/151d60bbf74dbb69f12eee80142b6c78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/807ac69128a0556517a56cada4ebbda4.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
②若对于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ac67e9a909472ab852d38d2ec66a1e1.png)
您最近一年使用:0次
2024-04-17更新
|
282次组卷
|
15卷引用:北京市海淀区清华附中本部2023-2024学年九年级上学期开学考试数学试题
北京市海淀区清华附中本部2023-2024学年九年级上学期开学考试数学试题 2022年北京市石景山区九年级中考二模数学试卷(已下线)2022年北京四中九年级6月返校考试数学试题浙江省杭州市拱墅区锦绣育才教育集团2022-2023学年九年级上学期12月月考数学试题北京市海淀区首师大附属中学2022-2023学年九年级下学期数学阶段测试(3月)北京市第二十二中学、北京市第二十一校2022-2023学年九年级下学期数学月考试卷(3月)北京市西城区铁路第二中学2023-2024学年九年级上学期月考数学试题北京市第十四中学2023-2024学年九年级上学期月考数学试题福建省福州市时代华威中学2023-2024学年九年级上学期期中数学试题2023年浙江省杭州市西湖区紫金港中学中考数学二模模拟试题2023年浙江省杭州市翠苑中学二模数学模拟预测题2024年北京市东城区汇文中学中考一模数学试题2024年北京市汇文中学中考模拟数学试题2024年河南省中招第三次模拟考试试题2024年河南省信阳市平桥区九年级中考三模数学试题
名校
2 . 已知二次函数
,当
时,
的最大值是16,最小值是8,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a590d56e8989e34971fda909b5ec3715.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b5e52290cb36a5d14ffa2346f77476.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3f15586e5089aea9aad6dfe0ee9fc4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a590d56e8989e34971fda909b5ec3715.png)
您最近一年使用:0次
3 . 在平面直角坐标系
中,已知点
,N.对于点P给出如下定义:将点P向右(
)或向左(
)平移
个单位长度,再向上(
)或向下(
)平移
个单位长度,得到点
,点
关于点N的对称点为Q,称点Q为点P的“对应点”.
(1)如图,点
,点N在线段
的延长线上,若点
,点Q为点P的“对应点”.
①在图中画出点Q;
②连接
,交线段
于点T.求证:
;
(2)
的半径为1,M是
上一点,点N在线段
上,且
(
),若p为
外一点,点Q为点P的“对应点”,连接
.当点M在
上运动时直接写出
长的最大值与最小值的差(用含t的式子表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/299b0531ace62e0752934030d0e7e4af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3a34d6f60032718820c3da2b07786b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e10e1c43b86a8cd4360ca9b57232164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/058315922cc0ae811d323920f7494219.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90e8d5d7fed033f48270b1ff825fcd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3a915c1a8a9304aeb307d130faaeb15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c10a72461b1845357cada40904fe8a54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee6765a83140d745a6de4c85d9b6b50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee6765a83140d745a6de4c85d9b6b50.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/11/ecbe5280-f2cc-421f-b7b8-c19cdd2cff3b.png?resizew=217)
(1)如图,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3b9ae3974672b0ab9b2894ca06a53ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ecfca4a090b78015210871850538361.png)
①在图中画出点Q;
②连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fef367c3276d4e043c08be24f9fa587d.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f780c4f6acf9d16022e038f2a92942f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d6a8090b98be10b14f6ef69b126e81c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
您最近一年使用:0次
名校
4 . 在平面直角坐标系
中,抛物线
与
轴交于点
,且经过点
,已知点
横坐标为:
.
(1)当
时,抛物线的对称轴为________,顶点为________;
(2)记二次函数图象在点
、点
之间的部分(包括
、
)为图形
.
当
时,若图形
与
轴有且只有一个交点,求
的取值范围;
当
时,记图形
上点的纵坐标的最大值与最小值的差为
,直接写出
关于
的函数解析式(用
表示
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/940b1490c5c8c6483ed26b13a4df6585.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2360f4c62f7f1173922e755529a00fae.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f16d5ed858699bfea5039a7bf8ae6.png)
(2)记二次函数图象在点
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1c9ae241fd78126274c65e17990c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c650fe55b7603f106c53ca2423451c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f4c78214e43a8b93f2a57072033cbcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
您最近一年使用:0次
5 .
为等腰直角三角形,
,点
是直线
上一动点(不与点
重合),连接
,过点
作直线
的垂线段,垂足为点
,将线段
绕点
逆时针旋转
得到线段
,连接
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/6/311daf1b-ecaf-47bc-a9ed-80e4a53d7229.png?resizew=439)
(1)如图1,当点
在线段
上时.
①求证:
;
②延长
交
于点
,求证:
为
的中点.
(2)若
,直接写出
的最大值和最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/6/311daf1b-ecaf-47bc-a9ed-80e4a53d7229.png?resizew=439)
(1)如图1,当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/421291381be28da4bd16560fd383b4a9.png)
②延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3d2fc1ae143960a13e51a726af81b71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
您最近一年使用:0次
6 . 已知
是
的二次函数,表中列出了部分
与
的对应值:则该二次函数有__________ (填“最小值”或“最大值”).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![]() | 0 | 1 | 2 |
![]() | 0 | 1 | ![]() |
您最近一年使用:0次
7 . (1)请在网格坐标系中画出二次函数
的大致图象.(注:图中小正方形网格的边长为1.)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/5/c588508c-a1ae-4a1f-804c-2f746919c02b.png?resizew=207)
(2)观察(1)中所画图象,填空:当
满足: 时,
.
(3)观察图形,填空:当
时,
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef7a6d0032f9161eccda678c0d1d9d79.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/5/c588508c-a1ae-4a1f-804c-2f746919c02b.png?resizew=207)
(2)观察(1)中所画图象,填空:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
(3)观察图形,填空:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/836d745b71ec18b1135e8bbf6990bffa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18c68ee34838d4192048176a20cb568e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b548d3ed0ebea60307b6185308a7d3d.png)
您最近一年使用:0次
8 . 当
时,反比例函数
的最大值与最小值之差是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95842ad442c7f6d5ec4b32939b929e63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef854dfcbba9b7dedc1bc52f6332b011.png)
您最近一年使用:0次
2024-01-19更新
|
44次组卷
|
2卷引用:河北省廊坊市育人学校2023-2024学年九年级下学期开学测试数学试题
名校
9 . 在平面直角坐标系
中,二次函数
的图象上两个点
,
,点
、
之间的部分(包含点
、点
)记作图象
,图象
上
的最大值与最小值的差记作
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/83d8ae4b-a0c0-4288-a4ed-300b48ab42e7.jpg?resizew=227)
(1)求这个二次函数的对称轴(用含
的代数式表示);
(2)当
,
,
时,求
的值;
(3)当
,
时,恒有
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0665ac2d64579902695d238532e77c37.png)
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/474409a89dce3900e006d7f8d91678bf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/83d8ae4b-a0c0-4288-a4ed-300b48ab42e7.jpg?resizew=227)
(1)求这个二次函数的对称轴(用含
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62b6ab454199d2738ea1b5cefb133d50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50e4fd085ee10f340a008389c4a1a80d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/474409a89dce3900e006d7f8d91678bf.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de20d9ca8c88eabc8196de851de62b59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49cd01cc283ff149f92159d12ed8fd34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99022989515393163260169ce24ab4a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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10 . 关于二次函数
,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9091d2c2faed82f48fe8eea559bf2457.png)
A.当![]() | B.当![]() |
C.当![]() | D.当![]() |
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3卷引用:北京市第十五中学2023-2024学年九年级下学期开学考试数学试题