如图①,在平面直角坐标系
中,抛物线
经过点
和点
,与y轴交于点C,经过点A的直线l与y轴的负半轴交于点D,与抛物线
交于点E,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/18/5dfc0912-da6d-4167-9310-e8e1c20a997c.png?resizew=714)
(1)求抛物线
的解析式;
(2)如图②,点P是抛物线
上位于x轴下方的一动点,连接
,
与直线l交于点Q,设
和
的面积为
和
,求
的最大值;
(3)如图③,将抛物线
沿直线
翻折得到抛物线
,且直线l与抛物线
有且只有一个交点,求m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc895689872e21c85de85b98d4ee4146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8748dc55e2f45bc37fc4d84d7310f79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76d03fa28c117649b0fdfe17eed7b583.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06293af3b5c700dde5b77927037ee4a1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/18/5dfc0912-da6d-4167-9310-e8e1c20a997c.png?resizew=714)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
(2)如图②,点P是抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbcdb993a5e1c1197b1ef9a2398be0a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17277a306d4d0a0a0cf293f87802cf66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8da6e6930cccd3dadf6241b92d27bc6.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)如图③,将抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36d71f015144ffaf1faec94a259b4a06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
更新时间:2023-05-09 10:57:36
|
相似题推荐
解答题-问答题
|
较难
(0.4)
名校
【推荐1】如图,在平面直角坐标系中,
与
轴交于点
,与
轴交于点
.抛物线
过
、
两点,且与
轴交于另一点
.
![](https://img.xkw.com/dksih/QBM/2023/4/9/3212627378634752/3213459925106688/STEM/9358cbc7ac9e40c7bf8f896371059b6e.png?resizew=190)
(1)求抛物线的表达式;
(2)抛物线的对称轴与直线
相交于点
,点
为
轴上一点,当以
、
、
为顶点的三角形与
相似时,求线段
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae652daf6059ff386f99bef2210518c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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://staticzujuan.xkw.com/quesimg/Upload/formula/d96dde9c4aad0536c069127df0d4b12f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://img.xkw.com/dksih/QBM/2023/4/9/3212627378634752/3213459925106688/STEM/9358cbc7ac9e40c7bf8f896371059b6e.png?resizew=190)
(1)求抛物线的表达式;
(2)抛物线的对称轴与直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/81dea63b8ce3e51adf66cf7b9982a248.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】如图1,已知抛物线
与
轴交于点
,
,与
轴交于点
,连接
.
,
的值及直线
的解析式;
(2)如图1,点
是抛物线上位于直线
上方的一点,连接
交
于点
,过
作
轴于点
,交
于点
,
(ⅰ)若
,求点P的坐标,
(ⅱ)连接
,
,记
的面积为
,
的面积为
,求
的最大值;
(3)如图2,将抛物线位于
轴下方面的部分不变,位于
轴上方面的部分关于
轴对称,得到新的图形,将直线
向下平移
个单位,得到直线
,若直线
与新的图形有四个不同交点,请直接写出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d8de071a9c22c96a59b172d76c127e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75c561d105fe43b1a25ae26f0b6aac73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6486c10ec324649f8100b63829fbbf3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
(2)如图1,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80672dda9430cb42b3136bcb1b67bbad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/550be78432dca3f7249666a295bb13b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
(ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cec96d4f41e48deeb0b3b1a8238beaa8.png)
(ⅱ)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcfaca9396f85c0137b534903321fcbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14b49022a6f55817b5d7e3ab443b5491.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58fb3fd02b6a29ddb0636b54d64f5b68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a8b0d7e169313c2a2d5c278cf968b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235f0a6fb218d28383e6f27f2df1f50f.png)
(3)如图2,将抛物线位于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.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/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐3】如图,在平面直角坐标系中,抛物线
a≠0)与x轴交于点A(-2,0)、B(4,0),与直线y= -
x+3交于y轴上的点C,直线y= -
x+3与x轴交于点D.
![](https://img.xkw.com/dksih/QBM/2022/5/7/2974389687222272/2975192425979904/STEM/f8d10ff3ce3f4ffb9c7f8e4b5f232a08.png?resizew=273)
(1)求该抛物线的解析式;
(2)点P是抛物线上第一象限内的一个动点,连接PC、PD,当△PCD的面积最大时,求点P的坐标;
(3)将抛物线的对称轴向左平移3个长度单位得到直线
,点E是直线
上一点,连接OE、BE,若直线
上存在使sin∠BEO最大的点E,请直接写出满足条件的点E的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
![](https://img.xkw.com/dksih/QBM/2022/5/7/2974389687222272/2975192425979904/STEM/f8d10ff3ce3f4ffb9c7f8e4b5f232a08.png?resizew=273)
(1)求该抛物线的解析式;
(2)点P是抛物线上第一象限内的一个动点,连接PC、PD,当△PCD的面积最大时,求点P的坐标;
(3)将抛物线的对称轴向左平移3个长度单位得到直线
![](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/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐1】如图1,在
中,延长
到D,使
,E是
上方一点,且
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/13/e6e0e282-6c74-4a21-bab5-a53ba2d6b5d3.png?resizew=457)
(1)若
,则
______;
(2)如图2,若
,将
沿直线
翻折得到
,连接
交
于F,若
,求证:F是
的中点;
(3)在如图3,若
,
,将
沿直线
翻折得到
,连接
交
于F,交
于G,若
,
(
)求线段
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df4a2a127d89d50d3fde881a9b58ef0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1857fd0d79fb8cbb8045e949984104e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/13/e6e0e282-6c74-4a21-bab5-a53ba2d6b5d3.png?resizew=457)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6496ee18e59984e33cce6d130665eef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce2a8bf5e05a07c93a7104839fc21849.png)
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d30252720ff0a2b1f105523e9aa3b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926d2094777538ba6a70ea65d5061ef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f222edb32c941fe3f76a803faae410c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926d2094777538ba6a70ea65d5061ef7.png)
(3)在如图3,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d30252720ff0a2b1f105523e9aa3b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926d2094777538ba6a70ea65d5061ef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3d296e0d7154a170cb7d3ae42989b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aada537209e8ab7626e42b17f68907b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d100c22435a23e017cfe6f535379d3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
您最近一年使用:0次
解答题-计算题
|
较难
(0.4)
【推荐2】综合与实践
问题背景
在一节数学活动课上,张老师把一些宽度均为
的矩形纸条分发给各个小组,要求各小组通过折纸来研究数学问题.
实践操作
(1)“明志”小组提出;将纸条按如图①的方式折叠并将重叠部分剪下,得到图②中的四边形
,再将四边形
沿
折叠,使点
落在边
上的点
处,点
落在点
处;
(2)“明理”小组在进行了如图①的折叠后,把得到的四边形向右折叠了两次,如图③所示.将重叠部分剪下得到如图④的四边形
,然后将四边形
沿
折叠,使点
恰好落在边
上的点
处;
(3)“明德”小组用与“明理”小组同样的方法得到四边形
,然后将四边形
沿
折叠,使点
与点
重合,点
落在了点
处.
解决问题
(1)“明志”小组通过测量得到图2中
的长度刚好为
,据此可以求出折痕
的长度是
(2)“明理”小组使用量角器测得图④中,
,请你求出四边形
的面积.
(3)按照“明德”小组的折叠方式,得到的四边形
是什么特殊的四边形,并说明理由.
拓展创新
(4)在图⑤中,由折叠的性质可以知
,那么能否求出四边形
其它边的长度呢?任选一条能够计算长度的边,写出这条边,并直接写出它的长度.
![](https://img.xkw.com/dksih/QBM/2020/2/7/2394073667461120/2394482198609920/STEM/e9479877f28d47eeba3123a9a5d32cf8.png?resizew=553)
问题背景
在一节数学活动课上,张老师把一些宽度均为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f319d8ffd15a6ce36ca7aecad4fd087.png)
实践操作
(1)“明志”小组提出;将纸条按如图①的方式折叠并将重叠部分剪下,得到图②中的四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4cfbcf4ecbca8f964985f4a2d3700ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b227b38b45b5fce63a6bdad8adf113.png)
(2)“明理”小组在进行了如图①的折叠后,把得到的四边形向右折叠了两次,如图③所示.将重叠部分剪下得到如图④的四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589786dd7c3a2679c3230b671cd232d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfbc6a99cf6319a575c363a4b9151bfb.png)
(3)“明德”小组用与“明理”小组同样的方法得到四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71432131d194730a67f3192d1f8679b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/187a1854f975eec7ad394ae83f538f9d.png)
解决问题
(1)“明志”小组通过测量得到图2中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/943712a5e96b16cc15d775cc4687237e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbed738d0700c76e01e4b347dbc0b51d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
(2)“明理”小组使用量角器测得图④中,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b4abc537def45308ebdeec273e5c058.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82720729ebc1338574c55316792bb43b.png)
(3)按照“明德”小组的折叠方式,得到的四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22aaf91e06d05d27ea33402dce13e352.png)
拓展创新
(4)在图⑤中,由折叠的性质可以知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/100255083d11df9b71f184b8c9ee5292.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fcb5c9f27f3a86875fe8824ee837f90.png)
![](https://img.xkw.com/dksih/QBM/2020/2/7/2394073667461120/2394482198609920/STEM/e9479877f28d47eeba3123a9a5d32cf8.png?resizew=553)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐1】如图,在平面直角坐标系中,矩形
的顶点
、
在坐标轴上,点
的坐标为
,点
是射线
上一点.
![](https://img.xkw.com/dksih/QBM/2020/8/21/2532611512221696/2532677833097216/STEM/7d46c3c8472e4a14b00a8cc39585c29a.png?resizew=312)
(1)当点
在线段
上时,把
沿
折叠,点
的对应点记为
.
①如图①,若点
为线段
的中点时,求点
的坐标;
②如图②,若点
恰好落在线段
的垂直平分线上时,求点
的坐标;
(2)如图③,当点
在
的延长线上时,连接
并延长交
轴于点
,点
的纵坐标为6.若点
在
边上运动,连接
,求
取最小值时点
的坐标.
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/238f0ea276a00ae8d681ce00cc11c8ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://img.xkw.com/dksih/QBM/2020/8/21/2532611512221696/2532677833097216/STEM/7d46c3c8472e4a14b00a8cc39585c29a.png?resizew=312)
(1)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad09a769a75b107390b9eeccc929f761.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
①如图①,若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
②如图②,若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(2)如图③,当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7af1846899304536d1c739384d5be21d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】已知
为
的直径,连结
,点F是
上一点,且
.
![](https://img.xkw.com/dksih/QBM/2023/1/5/3146036266434560/3148476927451136/STEM/905b9a5d0e554cab935772e95fef8c62.png?resizew=470)
(1)如图1,若
,
,求
的长;
(2)若
,点E是
上一点,连结
,交
于点P;
①如图2,当点E为
中点时,求
的值;
②连结
,当
时,
;
.(利用备用图探索)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d578394cd8e4d7a705599269c512960.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4515e1dff9a852b3294dc1d6488a5748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b7f6f32dc4b3123265abe08b24ae111.png)
![](https://img.xkw.com/dksih/QBM/2023/1/5/3146036266434560/3148476927451136/STEM/905b9a5d0e554cab935772e95fef8c62.png?resizew=470)
(1)如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab926d89b65f26c12e3da73ef1e5cf68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
①如图2,当点E为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4821eec9eb06107b9297db207544d62a.png)
②连结
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/508f8d607c633e9b008d48ac3dcd22e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/561bc77f4508377a665c1d5fea11475f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b3dcd9161991c027aed30b55f3b7eda.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐1】如图,抛物线
与
轴相交于点
,与
正半轴相交于点
,负半轴相交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/23/a5188fb4-841e-4a26-b2f3-448b3f428c05.png?resizew=252)
(1)求此抛物线的解析式.
(2)如图1,
是第一象限抛物线上的一个动点,过点
作
轴,垂足是点
,
与
的交点为
,设
.
①用含
的式子表示:
________,
________.
直接用①的结论求解②③
②若
,请直接写出点
的坐标.
③若
,求点
的坐标.
(3)如图2,若点
在抛物线上,点
在
轴上,当以点
,
,
,
为边的四边形是平行四边形时,请直接写出点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96dde9c4aad0536c069127df0d4b12f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/850e01debd266a398b597a1876dbb3ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d57173ef4cd72eb270686875dfd623.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/23/a5188fb4-841e-4a26-b2f3-448b3f428c05.png?resizew=252)
(1)求此抛物线的解析式.
(2)如图1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f00d0ff8dd38da17167cf9b789eec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365822bd3945e6a3e871ca979c84cc12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90688751e58655291204fab149e744e3.png)
①用含
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb4506d27656f9009b41c6d2fe44b47e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/404728d0ea2699c71e674f30dd984abd.png)
直接用①的结论求解②③
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/224b633501aa8da2a8c5fb2781eb026e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b17e6cbaf17c2ba0a1d333f02aebf58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)如图2,若点
![](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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/a0ed1ec316bc54c37c4286c208f55667.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
名校
【推荐2】如图1,在平面直角坐标系中,点O为坐标原点,直线
与x轴、y轴相交于B、C两点,抛物线
经过点B,且与x轴负半轴相交于点A,且
.
(2)如图2,抛物线的顶点为D,对称轴交x轴于H,点P是抛物线上对称轴
右侧一点,过P作对称轴
的垂线
,垂足为E,设点P的横坐标为t,
,求出d与t之间的函数关系式(不要求写出自变量t的取值范围);
(3)在(2)的条件下,如图3,连接
,它们相交于点G,点F在
上,过点F作
的垂线交抛物线于M、N两点(点M在点N的左侧),若
,且
,求点F的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae652daf6059ff386f99bef2210518c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d8de071a9c22c96a59b172d76c127e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63763adb027f5f1cce37007c60272914.png)
(2)如图2,抛物线的顶点为D,对称轴交x轴于H,点P是抛物线上对称轴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e4fa04825ac7d071968056322d88be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e4fa04825ac7d071968056322d88be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/535add0db950ed30185356a9749d46f1.png)
(3)在(2)的条件下,如图3,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4528328ed320d6b5f29570c860593e5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e4fa04825ac7d071968056322d88be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e4fa04825ac7d071968056322d88be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e40208183c234043dc95f046a95929e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cb4eb87fd9c474fea913e4b68818abd.png)
您最近一年使用:0次