如图1,抛物线
与
轴交于
和
两点,与
轴交于
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/29/5a8f9006-ba71-4df6-8059-71ccbb0abb20.png?resizew=316)
(1)直接写出
,
,
三点的坐标;
(2)连接
、
,
点为抛物线上第三象限内一动点,且
,求点
坐标;
(3)如图2,直线
交抛物线于
、
两点(
、
不与
、
重合),直线
、
分别交
轴于点
、点
,若
、
两点的纵坐标分别为
,
,试探究
,
与
之间的数量关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48719bf085dfdd81e1b728b857542cd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/29/5a8f9006-ba71-4df6-8059-71ccbb0abb20.png?resizew=316)
(1)直接写出
![](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)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9811ae27264b5bd173c174bc7f11832.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(3)如图2,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e90a7633da885add35e71cd0463d01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.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/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
更新时间:2023-12-29 10:05:39
|
相似题推荐
解答题-问答题
|
困难
(0.15)
【推荐1】如图,
,
分别为
轴正半轴,
轴正半轴上的点,已知点
的坐标是
,
.过
,
两点的抛物线
与
轴的另一个交点落在线段
上.该抛物线与直线
在第一象限交于
,
两点,且点
的横坐标为
.
![](https://img.xkw.com/dksih/QBM/2021/1/29/2646564535042048/2669423710175232/STEM/8b75a51e-ba76-4e55-886e-34111c24145a.png?resizew=166)
(1)求该抛物线的解析式;
(2)若直线
与线段
的交点记为
,当
时,求点
的坐标;
(3)
是
轴上一点,连接
,
,当
时,若满足条件的点
有两个,且这两点间的距离为
,求直线
的解析式.
![](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/a9985ad1358d0fddcb8bfc99deb95bf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d0d46da745fa5e71ea97e7b30beb6fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1daa67de3b8971d54ced0cac0cd11f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/548e9e5752cd788a0cb5dd74372f0c8a.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/c468dc5cc34c14a188493a21019e8f83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9985ad1358d0fddcb8bfc99deb95bf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80d86a6026abea99737de584cd5edc55.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://img.xkw.com/dksih/QBM/2021/1/29/2646564535042048/2669423710175232/STEM/8b75a51e-ba76-4e55-886e-34111c24145a.png?resizew=166)
(1)求该抛物线的解析式;
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee26747d34326dc95617d94aebd10bce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9985ad1358d0fddcb8bfc99deb95bf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/722e40a19572920f0e5a10ec2f06a05b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
名校
【推荐2】在平面直角坐标系xOy中,抛物线y=a(x﹣3)(x+1)与x轴交于A、B两点,与y轴交于点C(0,
),连接AC、BC.
(1)求抛物线的函数表达式;
(2)抛物线的对称轴与x轴交于点D,连接CD,点E为第二象限抛物线上的一动点,EF∥BC,直线EF与抛物线交于点F,设直线EF的表达式为y=kx+b.
①如图①,直线y=kx+b与抛物线对称轴交于点G,若△DGF∽△BDC,求k、b的值;
②如图②,直线y=kx+b与y轴交于点M,与直线y=
x交于点H,若
﹣
=
,求b的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47153fdd73c0661fa460130082e30929.png)
(1)求抛物线的函数表达式;
(2)抛物线的对称轴与x轴交于点D,连接CD,点E为第二象限抛物线上的一动点,EF∥BC,直线EF与抛物线交于点F,设直线EF的表达式为y=kx+b.
①如图①,直线y=kx+b与抛物线对称轴交于点G,若△DGF∽△BDC,求k、b的值;
②如图②,直线y=kx+b与y轴交于点M,与直线y=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49ab1a9123713d141869f40b5cd1feec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a4e261f26e3fcb78f99cbf415d1c4b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba034367d97d87e43f20c16ff2410057.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/15/c64ad408-1a2a-4e14-a122-768ead0eb14b.png?resizew=405)
您最近一年使用:0次
解答题-证明题
|
困难
(0.15)
【推荐3】如图,二次函数
的图像如图所示,点F的坐标为
,直线
的表达式为
,且经以坐标原点O为圆心且过点F的单位圆与直线
相切.过点F的动直线在第一、二象限交二次函数的图像于点A,B,点C线段AB的中点.过点A,B,C向直线
作垂线,垂足为
,
,
,连接
,
交于点M,连接
,
交于点N,
![](https://img.xkw.com/dksih/QBM/2022/3/6/2930460585517056/2938230508363776/STEM/7fb2dc7f-9ed3-4b14-b757-dfca042180e4.png?resizew=350)
(1)求二次函数
的表达式.
(2)判断四边形
的形状,并做出证明.
(3)在图中,是否存在圆心在线段AB上且与线段AB有两个交点的圆,满足其与图中已有的水平直线(不包括考生自行添加的辅助线)相切?写出你的结论并给出证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da7d8297dee9c44c7a1b0a7c897ab500.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fee16a99d5b76a2bcaeb30d0c878d6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423f5e7781b94f96ff4aac23cba2964d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2684b10100be43f77a13fa0ccd1c1d72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5326817f9af012432a202749d1df59f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39e210795a966bd5dc1293479ab1988b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c962456e190ea0d7e6e88782aa8c161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c18f0bb88e1b117e123645015ec06f69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db94ea06ef27a92107d4bb70a404a826.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8f10667f3a8098df8b78e27d3860b5.png)
![](https://img.xkw.com/dksih/QBM/2022/3/6/2930460585517056/2938230508363776/STEM/7fb2dc7f-9ed3-4b14-b757-dfca042180e4.png?resizew=350)
(1)求二次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc93c94912a2a31ff5c97482a3996c8.png)
(2)判断四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c922dcdbfd1520d95daf615fffa9277.png)
(3)在图中,是否存在圆心在线段AB上且与线段AB有两个交点的圆,满足其与图中已有的水平直线(不包括考生自行添加的辅助线)相切?写出你的结论并给出证明.
您最近一年使用:0次
解答题-证明题
|
困难
(0.15)
【推荐1】已知抛物线
(
)与x轴交于A,B两点(点B在x轴正半轴),与y轴交于点C,连接
,
,
.
(1)求抛物线的解析式;
(2)若点D在点B,C之间的抛物线上运动(不与点B,C重合),连接
交
于点E,连接
.记
,
的面积分别为
,
,求
的最大值;
(3)已知抛物线的顶点的为G,过点G的直线l与抛物线的另一个交点为P,直线l与直线
:
交于点F,过点F作
的垂线,交抛物线于点Q,过
的中点M作
于点N.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358e2987096a67189bcc2a642da39524.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13395cc6b33beadf1ccf7b65ea4b8bfc.png)
(1)求抛物线的解析式;
(2)若点D在点B,C之间的抛物线上运动(不与点B,C重合),连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e72a855bb6d80737099e412ed52a26b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235f0a6fb218d28383e6f27f2df1f50f.png)
(3)已知抛物线的顶点的为G,过点G的直线l与抛物线的另一个交点为P,直线l与直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13dea1bd3d0dd84b8b6f6ff634c5600c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0b60ffaded4bbcef7012aad9c4a4fc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13dea1bd3d0dd84b8b6f6ff634c5600c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3666cc33865d939a2ef627e68e7fc756.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00608cf686699d33041875c36e63e965.png)
您最近一年使用:0次
解答题-作图题
|
困难
(0.15)
【推荐2】在平面直角坐标系
中,函数
的图象与函数
的图象在第一象限有一个交点
,且点的横坐标为
.
![](https://img.xkw.com/dksih/QBM/2021/7/7/2759176006410240/2818502999916544/STEM/b1ffdf01-5264-4b04-a1cd-183f0191d55b.png)
(1)求
的值.
(2)补全表格并以表中各组对应值作为点的坐标,在直角坐标系内描出相应的点,画出
的函数图象;
(3)根据函数图象,写出函数
的一条性质:_______;
(4)已知函数
与
的图象在第一象限有且只有一个交
,若函数
与
的函数图象有
个交点,求
的取值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc86a32e2f5912e1e122877f43a4078d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/422bd4133b60adb093abfefe051b99fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://img.xkw.com/dksih/QBM/2021/7/7/2759176006410240/2818502999916544/STEM/b1ffdf01-5264-4b04-a1cd-183f0191d55b.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)补全表格并以表中各组对应值作为点的坐标,在直角坐标系内描出相应的点,画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
______ | ______ | ______ | ______ | |||||||
______ | ______ | ______ | ______ | ______ | ______ | ______ | ______ |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
(4)已知函数
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5942474f87ec13a039931cb32689bdce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
解题方法
【推荐1】如图,在平面直角坐标系中,二次函数
的函数解析式为
,点
是二次函数
的图象上一点,过点
作直线
轴,且点
的横坐标为
,二次函数
的图象与二次函数
的图象关于直线
成轴对称.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/13/2f514b8a-576b-4cb3-935e-ec5e378500d7.png?resizew=192)
(1)直接写出二次函数
图象的对称轴(用含
的代数式表示)
(2)当点
落在
轴上时,求二次函数
的解析式.
(3)当点
在
轴的右侧时,过点
作射线
轴,设射线
与
的图象交于点
,
的图象在
上方的部分记为
,
的图象的剩余部分沿
翻折得到
,由
和
所组成的图象记为
.
①当点
的纵坐标与横坐标之和为6时,求
的值
②当
时,随着
的增大,图象
所对应函数的函数值
先减小后增大时,直接写出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7688363f5ffff23a6193c7a8eee501c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d72b02ea5505034183592909f68596c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7688363f5ffff23a6193c7a8eee501c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/165a501b2e6a3acc46212e59a166c053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5815cc29f60d2aa538c4dd30e0803a4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7688363f5ffff23a6193c7a8eee501c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/13/2f514b8a-576b-4cb3-935e-ec5e378500d7.png?resizew=192)
(1)直接写出二次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5815cc29f60d2aa538c4dd30e0803a4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5815cc29f60d2aa538c4dd30e0803a4b.png)
(3)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/386a30b86bc52e05dd2cd4673a4ed69d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5815cc29f60d2aa538c4dd30e0803a4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5815cc29f60d2aa538c4dd30e0803a4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b104090ea2ac34be58a76a4e0e95cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5815cc29f60d2aa538c4dd30e0803a4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df1d9b712b639c8b6809c9f3ae03706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b104090ea2ac34be58a76a4e0e95cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df1d9b712b639c8b6809c9f3ae03706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
①当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd6ad6387d592102a743742620eee7fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
【推荐2】如图
,将矩形
置于平面直角坐标系中,点
的坐标为
,点
的坐标为
,点
在边
上,将
沿
折叠压平,使点
落在坐标平面内,设点
的对应点为点
.
,当
时,抛物线过点
、
、
,求抛物线解析式;
(2)如图
,随着
的变化,点
正好落在
轴上,求
的余切值;
(3)若点
横坐标坐标为
,抛物线
且
为常数
的顶点落在
的内部,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2a08ff2ce9077b072721a20489edf1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bb722fa9d9dfce5c708e2e1d08f5a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/001f6a6033d1e0102383d516c3767b02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a3cc8c48bf54ec8252e5dce6867754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d8a0acbba4110bda5cf00375f7fa68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
名校
解题方法
【推荐3】如图1,抛物线y=a
+bx+c交x轴于A、B两点,交y轴于C点.且抛物线的对称轴为x=2,OC=3,S△ABC=3.
![](https://img.xkw.com/dksih/QBM/2022/10/8/3083008658620416/3087336595308544/STEM/94a4f1c8b9dc44549801359550dd45eb.png?resizew=550)
(1)求抛物线的解析式;
(2)如图2,过D(m,﹣2)作抛物线切线(不与y轴平行,且与抛物线有且仅有一个交点)DE:y=
x+
(切点为E)和DF:y=
x+
(F为切点),求
的值;
(3)如图3,将抛物线向左平移两个单位后再沿y轴向下运动得抛物线
,直线
分别与(2)中直线DE、DF平行,
与
交于E,F两点,
与
交于G,H两点,M,N分别为EF、GH的中点,求点O到直线MN的距离d的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a9ac49790d4d337b9f528305293756c.png)
![](https://img.xkw.com/dksih/QBM/2022/10/8/3083008658620416/3087336595308544/STEM/94a4f1c8b9dc44549801359550dd45eb.png?resizew=550)
(1)求抛物线的解析式;
(2)如图2,过D(m,﹣2)作抛物线切线(不与y轴平行,且与抛物线有且仅有一个交点)DE:y=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb85b3fa748136b2f6189c55634eb259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc1669f335039ab51d3e3faccb0c3579.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a87e0c79fdd8e028e234947bd9c4504b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed5ee6b5c85d47fff33be6f85253dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d49d1ebc3ba66fdefde643d492fd6d02.png)
(3)如图3,将抛物线向左平移两个单位后再沿y轴向下运动得抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a934ce5e53baa277fa4fa9d9a7647d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdaf213c7ff41c602c2ec45d778449e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5614fccc3595fc6d78d2b37c147a7a9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a934ce5e53baa277fa4fa9d9a7647d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3b061a133a2157915091d212772fc3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a934ce5e53baa277fa4fa9d9a7647d.png)
您最近一年使用:0次