如图,在平面直角坐标系
中,
为坐标原点,抛物线
(其中
、
为常数)与
轴分别交于点
、
两点,点
在点
的左侧,与
轴交于点
,且抛物线经过点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
、![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
.
的坐标为
,
①
_______,点
的坐标为______;
②点
是线段
上方抛物线上的一动点,连接
交
于点
,若
,直接写出点
的横坐标为_______;
(2)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f2beb91f10d2d8f2aa0dcc3f5cd1598.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a0d44326c214c7a5ecc3068a29ec96f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4723d1d83884d7f0b6105f65137d3a30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.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/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://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9da1bc8538285e3bdcf44ba963918c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ff85442e2f2443c1d7abbb671f88132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c22a9716e8e255424332395885229f32.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
②点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c042ff18466e8165fadf343d142a4b0.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/b831ac1e831dc9572a239c27dd661565.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db2f403543c32fde293c92c6c3056d05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a9851eb843a87f65a1d8b682b41779.png)
更新时间:2024-05-20 19:21:02
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相似题推荐
解答题-问答题
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【推荐1】已知在平面直角坐标系
中,抛物线
与
轴交于点
、点
(点
在点
的左侧),与
轴交于点
,抛物线的顶点为
,且
.
(2)点
是线段
上一点,如果
,求点
的坐标;
(3)在第(2)小题的条件下,将该抛物线向左平移,点
平移至点
处,过点
作
直线
,垂足为点
,如果
,求平移后抛物线的表达式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7a1d7bbe3465ff1ca3a770fd3e3f633.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/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://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
(2)点
![](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/a364f2fceb67330f21486506db01597e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)在第(2)小题的条件下,将该抛物线向左平移,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a5f445af1ae136773cb338920552ff2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b39bb9ad520cdbe1883cc8a8dfbf1b35.png)
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【推荐2】二次函数y=﹣
x2+bx+c的图象与直线y=﹣
x+1相交于A、B两点(如图),A点在y轴上,过点B作BC⊥x轴,垂足为C(﹣3,0).
(1)填空:b=_____,c=_____.
(2)点N是二次函数图象上一点(点N在AB上方),过N作NP⊥x轴,垂足为点P,交AB于点M,求MN的最大值;
(3)在(2)的条件下,点N在何位置时,BM与NC相互垂直平分?并求出所有满足条件的N点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d59ab85c075a09d55d69e159e4abb268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)填空:b=_____,c=_____.
(2)点N是二次函数图象上一点(点N在AB上方),过N作NP⊥x轴,垂足为点P,交AB于点M,求MN的最大值;
(3)在(2)的条件下,点N在何位置时,BM与NC相互垂直平分?并求出所有满足条件的N点的坐标.
![](https://img.xkw.com/dksih/QBM/2019/12/25/2362548812783616/2362867939917824/STEM/d74b1fe5d4cb46c5bd4b663d4d0ebc31.png?resizew=219)
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【推荐1】在平面直角坐标系中,直线
(k为常数,且
)与x轴交于点
,与y轴交于点C,二次函数
的图象经过A、C两点,与x轴的另一交点为点
.
(1)求二次函数的表达式;
(2)点D是二次函数图象上一动点,过点D且垂直于x轴的直线交
于F,交x轴于G.
①若点D、F、G三点中恰有一点是其它两点所连线段的中点,请直接写出点D的坐标;
②动点D在直线AC上方,连接
,设直线
交线段
于点
,
的面积为
,
的面积为
,
的面积为
,若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/023ab3a7eb0f59993c7608576e47c0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2c80c26a794a844127aae7dee87c93b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b078585c75524673305d270e9eefab89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0c9800e4b992044d16681e77ff6563c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)求二次函数的表达式;
(2)点D是二次函数图象上一动点,过点D且垂直于x轴的直线交
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
①若点D、F、G三点中恰有一点是其它两点所连线段的中点,请直接写出点D的坐标;
②动点D在直线AC上方,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a20cb2c77ea29b6eabbc477bc3743859.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ac5396c5ea442e0364b50c1db3d2da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6899bf9cadae2ccdb14cbc87d4f280ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c717d1ae39cc2b01dd20165e4fb8cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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【推荐2】在平面直角坐标系中,函数
(m为常数)的图象记为G.
(1)当
时,图象G的最高点坐标为___________.
(2)当图象G与坐标轴只有两个交点时,求m的值.
(3)当
时,图象G的最高点到x轴的距离为1时,求m的值.
(4)当图象G上有四个点到直线
的距离等于到x轴距离的
时,直接写出m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1c92e7d02b971f87573151ccf4623dc.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd876a2ed79c64bacc3e64b8ee92735e.png)
(2)当图象G与坐标轴只有两个交点时,求m的值.
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db2b74d89854116e411c089d053df053.png)
(4)当图象G上有四个点到直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f33ac73294865557a251aa654ecd2f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
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【推荐1】已知x=1+2m,y=1﹣m.
(1)若点(x,y)恰为抛物线y=ax2﹣ax+1的顶点,求a的值;
(2)求y关于x的函数表达式;
(3)若﹣3≤m≤1,x≤0,求y的取值范围.
(1)若点(x,y)恰为抛物线y=ax2﹣ax+1的顶点,求a的值;
(2)求y关于x的函数表达式;
(3)若﹣3≤m≤1,x≤0,求y的取值范围.
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【推荐2】如图,平面直角坐标系中,A(5,0),B(2,3),连结OB和AB,抛物线y=-x2+bx经过点A.
(1)求b的值和直线AB的解析式;
(2)若P为抛物线上位于第一象限的一个动点,过P作x轴的垂线,交折线段OBA于Q.当点Q在线段AB上时,求PQ的最大值.
(1)求b的值和直线AB的解析式;
(2)若P为抛物线上位于第一象限的一个动点,过P作x轴的垂线,交折线段OBA于Q.当点Q在线段AB上时,求PQ的最大值.
![](https://img.xkw.com/dksih/QBM/2020/3/14/2419422488625152/2420274440495104/STEM/3e9474b2ccd24d23970204eeaa65448d.png?resizew=167)
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【推荐1】抛物线
交
轴于点
,
(点
在点
左侧),交
轴于点
,已知
和
,点
为抛物线上第四象限的动点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/7/876b5349-f0ba-42b9-b9ef-32da93ef9327.png?resizew=267)
(1)求抛物线的解析式;
(2)直线
交
于点
,求
的最大值;
(3)直线
交抛物线的对称轴于点
,过点
作
的平行线交抛物线的对称轴于点
,求当
最小时,动点
的横坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b7cd1d053af8da6b7cadfa34bf03d65.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/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://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316ba5cbb31299d683ac6c7dd795db85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/7/876b5349-f0ba-42b9-b9ef-32da93ef9327.png?resizew=267)
(1)求抛物线的解析式;
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf1edcd6fb7e526f5ea664f72d0cd42d.png)
(3)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/795247a4b19856ca1be2135c9309cbf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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【推荐2】我们定义:有一组邻角相等且对角线相等的凸四边形叫做“邻对等四边形”.
概念理解
(1)下列四边形中属于邻对等四边形的有 (只填序号);
性质探究
(2)如图1,在邻对等四边形ABCD中,∠ABC=∠DCB,AC=DB,AB>CD,求证:∠BAC与∠CDB互补;
拓展应用
(3)如图2,在四边形ABCD中,∠BCD=2∠B,AC=BC=5,AB=6,CD=4.在BC的延长线上是否存在一点E,使得四边形ABED为邻对等四边形?如果存在,求出DE的长;如果不存在,说明理由.
概念理解
(1)下列四边形中属于邻对等四边形的有 (只填序号);
①顺次连接任意四边形各边中点所得的四边形;
②顺次连接平行四边形各边中点所得的四边形;
③顺次连接矩形各边中点所得的四边形;
④顺次连接菱形各边中点所得的四边形;
性质探究
(2)如图1,在邻对等四边形ABCD中,∠ABC=∠DCB,AC=DB,AB>CD,求证:∠BAC与∠CDB互补;
拓展应用
(3)如图2,在四边形ABCD中,∠BCD=2∠B,AC=BC=5,AB=6,CD=4.在BC的延长线上是否存在一点E,使得四边形ABED为邻对等四边形?如果存在,求出DE的长;如果不存在,说明理由.
![](https://img.xkw.com/dksih/QBM/2019/2/15/2141305564217344/2141424219922432/STEM/d44dc01ba9224a1fadfdc724421de260.png?resizew=364)
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