如图,抛物线
交
轴于点
、
(点
在点
的左侧),与
轴交于点
,点
、
的坐标分别为(-3,0),(0,3),对称轴
交
轴于
,点
为抛物线顶点.
(1)求抛物线的解析式.
(2)点
是直线
下方的抛物线上一点,且
.求
的坐标.
(3)
为抛物线对称轴上一点,是否存在以
、
、
为顶点的
是等腰三角形,若存在,直接写出点
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/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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(1)求抛物线的解析式.
(2)点
![](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/3cef550181bf53e69e44d83c91340de9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45504031c84b187f9c6324622415ea22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/2020/9/28/2566465861181440/2609796796579840/STEM/4a1fdb98-58b1-400e-9904-8b548633f2ff.png)
更新时间:2020-12-08 15:48:05
|
相似题推荐
【推荐1】如图,在平面直角坐标系中,抛物线
与
轴交于点
、
两点,与
轴交于点
.
(1)求抛物线的解析式;
(2)点
从
点出发,在线段
上以每秒3个单位长度的速度向
点运动,同时点
从
点出发,在线段
上以每秒1个单位长度的速度向
点运动,其中一个点到达终点时,另一个点也停止运动,当
存在时,求运动多少秒使
的面积最大,最大面积是多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bd726a709fcbca1ddf826dca89d054f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913f78382630e50543e5f7192cae3ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316ba5cbb31299d683ac6c7dd795db85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求抛物线的解析式;
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c495b8fd7f7bb21c177c9d50fbf6919.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c495b8fd7f7bb21c177c9d50fbf6919.png)
![](https://img.xkw.com/dksih/QBM/2020/5/14/2462545089888256/2463276028223488/STEM/b3fad0b4-2914-4d47-8838-48e71dfca951.png?resizew=199)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】如图,在平面直角坐标系中,抛物线
的顶点为
,经过
,且与
轴正半轴交于
,
两点.
![](https://img.xkw.com/dksih/QBM/2021/5/10/2718155754766336/2786106583056384/STEM/e04b6a6d-85a4-48c7-9b99-92ca2b862b2b.png?resizew=306)
![](https://img.xkw.com/dksih/QBM/2021/5/10/2718155754766336/2786106583056384/STEM/1af3b4c5-adf0-4aab-811b-5b16b4ccc3bc.png?resizew=226)
![](https://img.xkw.com/dksih/QBM/2021/5/10/2718155754766336/2786106583056384/STEM/dbbdb773-b717-4fca-b558-9fe98f0395ce.png?resizew=254)
(1)如图1,连接
,将线段
绕点
顺时针旋转,使得
落在
轴的负半轴上,求点
的路径长;
(2)如图2,延长线段
至
,使得
,若
,且
,求抛物线的解析式;
(3)如图3,抛物线
的对称轴为直线
,与
轴交于
,经过点
的直线
与抛物线交于点
、
,若在
轴上存在
、
,使
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59aa39c69fe84e8dca27b05c52aa7a7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48c9fedecb9560b9b49ef1c53041db72.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://img.xkw.com/dksih/QBM/2021/5/10/2718155754766336/2786106583056384/STEM/e04b6a6d-85a4-48c7-9b99-92ca2b862b2b.png?resizew=306)
![](https://img.xkw.com/dksih/QBM/2021/5/10/2718155754766336/2786106583056384/STEM/1af3b4c5-adf0-4aab-811b-5b16b4ccc3bc.png?resizew=226)
![](https://img.xkw.com/dksih/QBM/2021/5/10/2718155754766336/2786106583056384/STEM/dbbdb773-b717-4fca-b558-9fe98f0395ce.png?resizew=254)
(1)如图1,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)如图2,延长线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/367b2c0d66b5e61f1d6d0d21f3fb786a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f9bd8e472beeebf52a1231394ed7609.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b617f2510d49410c2d35e6f0abe23f43.png)
(3)如图3,抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a61d77911527508524874b212a0937d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08a6352cf6da6896bbfab0feefb12f8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4022c043033ce83580cc51497ae635.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ee64a2ba7f01a4d9acd46fd28ff89f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
解答题-计算题
|
较难
(0.4)
【推荐1】如图,直线
交
轴于点
,交
轴于点
,点
在
轴负半轴上,
,过点
作
于点
,交
轴于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/16/24be1568-0ac7-4184-8736-b50c999a7e67.png?resizew=141)
(1)请直接写出点
,
,
坐标,
______,
______,
______;
(2)连接
,则
______,
______;
(3)连接
,作
交
于
,求
______,
______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c64d1c6ed0b3a6b69413ada8af80362d.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/d053b14c8588eee2acbbe44fc37a6886.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/2d9a7b5182b56259506c4418fdf1ef65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f913298f0fae9f55377a8deab9f099dd.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/16/24be1568-0ac7-4184-8736-b50c999a7e67.png?resizew=141)
(1)请直接写出点
![](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/2a30f3a8b673cc28bd90c50cf1a35281.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bbef77923c7027f77ac4fa6cc5543c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a37f2c28e2c561a17e5ff33a053e279.png)
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7a01b1c4bd567e8979396fc01888798.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb1d1e08eed120895d188be9fb12dfde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a398fc344af283d7ec340d62a9127d13.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
解题方法
【推荐2】如图所示,在等腰
中,
,点
在以斜边
为直径的半圆上,
为
的中点,当点
沿半圆从点
运动至点
时,求点
运动的路径长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/630d82ae0ed6deb825514e0bc92e74a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/2020/8/21/2532611998654464/2532698481967104/STEM/fb0a409c041d4e34b4ddde3cd13d704b.png?resizew=118)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
名校
【推荐3】综合与实践:
问题背景:数学小组发现国旗上五角星的五个角都是顶角为
的等腰三角形,对此三角形产生了极大兴趣并展开探究.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/18/104484fa-8cc3-47a0-acd6-9e2e4dc5bf86.png?resizew=107)
探究发现:如图1,在
中,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/18/21b13db6-46ff-47ea-9ca3-e32c4259e09b.png?resizew=237)
(1)操作发现 :将
折叠,使边
落在边
上,点
的对应点是点
,折痕交
于点
,连接
,
①
_________
,
②设
,则
_________(用含
的式子表示);
(2)进一步探究发现:
,这个比值被称为黄金比.请你在(1)的条件下,证明:
.
拓展应用:当等腰三角形的底与腰的比等于黄金比时,这个三角形叫黄金三角形.
如图1中的
是黄金三角形.
如图2,在菱形
中,
,则菱形较长对角线的长
_________.
问题背景:数学小组发现国旗上五角星的五个角都是顶角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7b398c95494eddc79939f16e66cf4da.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/18/104484fa-8cc3-47a0-acd6-9e2e4dc5bf86.png?resizew=107)
探究发现:如图1,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69b27bb5d79601f74428dde5bb501523.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/18/21b13db6-46ff-47ea-9ca3-e32c4259e09b.png?resizew=237)
(1)操作发现 :将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bab27b523a3bd6dfaac51894ad19afce.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4db07c6ce6c8b0e96a3470c6a3491334.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
②设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fa41f80c6e33393a9f7bb57fca6b493.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ec5d678ec42846e1d28301e3bfd4be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)进一步探究发现:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5156adc8c4bbbebb15d992a26a529484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5156adc8c4bbbebb15d992a26a529484.png)
拓展应用:当等腰三角形的底与腰的比等于黄金比时,这个三角形叫黄金三角形.
如图1中的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
如图2,在菱形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eacb1c3f4abaa85feef946c66081d83b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.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
轴交于
、
两点,与
轴交于
点,
,
,连接
和
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/20/49b0198c-54af-4083-9e63-23bc6a5ceac1.png?resizew=313)
(1)求抛物线的解析式;
(2)点
在抛物线的对称轴上,当
的周长最小时,请直接写出 点
的坐标;
(3)点
是第四象限内抛物线上的动点,连接
和
.求
面积的最大值及此时点
的坐标;
(4)若点
是
轴上的动点,在坐标平面内是否存在点
,使以点
、
、
、
为顶点的四边形是菱形?若存在,请直接写出 点
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e59da5115d0dafea24822245f92c48.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://staticzujuan.xkw.com/quesimg/Upload/formula/9774f83067ed956a551bc41adcce0469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63447ea996b9036a7a7ae726cc382cdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/20/49b0198c-54af-4083-9e63-23bc6a5ceac1.png?resizew=313)
(1)求抛物线的解析式;
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(3)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfa1a2af7e38d33634c462300df381f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(4)若点
![](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/54a5d7d3b6b63fe5c24c3907b7a8eaa3.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.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:已知关于x的二次函数y=x2+bx+c的图像与x轴交于点A(1,0)和点B,与y轴交于点C(0,3).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/2/f9038537-7012-4b16-abee-10377f7b3b3d.png?resizew=138)
(1)求二次函数的解析式;
(2)在抛物线的对称轴上是否存在一点P,使△PBC为等腰三角形,若存在,请求出点P的坐标;
(3)有一个点M在线段CB上运动,作MN⊥x轴交抛物线于点N,问当M、N点位于何处时,△BCN的面积最大,求最大面积.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/2/f9038537-7012-4b16-abee-10377f7b3b3d.png?resizew=138)
(1)求二次函数的解析式;
(2)在抛物线的对称轴上是否存在一点P,使△PBC为等腰三角形,若存在,请求出点P的坐标;
(3)有一个点M在线段CB上运动,作MN⊥x轴交抛物线于点N,问当M、N点位于何处时,△BCN的面积最大,求最大面积.
您最近一年使用:0次
解答题-计算题
|
较难
(0.4)
【推荐1】已知抛物线
顶点在第三象限,顶点纵坐标为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/8/4ad5e27c-58d9-45d4-845c-5c596960351d.png?resizew=277)
(1)求抛物线的函数表达式和顶点坐标;
(2)若图象与x轴的交点为A、B,与y轴的交点G,求
的面积;
(3)在对称轴上找一点Q,使
的值最小,求满足条件的点Q坐标;
(4)在抛物线上是否存在一点P,使得
是以
为直角边的直角三角形?存在,求出点P坐标;不存在,说出理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9e194688dd2802cd41b36d0c9f787af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edbd40e04e2a943051fa83d6e511add.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/8/4ad5e27c-58d9-45d4-845c-5c596960351d.png?resizew=277)
(1)求抛物线的函数表达式和顶点坐标;
(2)若图象与x轴的交点为A、B,与y轴的交点G,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bc727c642cbc2181476b7dd8eca471e.png)
(3)在对称轴上找一点Q,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/755cc394a7b970b7de6bd800b838dfdd.png)
(4)在抛物线上是否存在一点P,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be582acf9b642aab783bfc29c595e88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.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,已知直线
与抛物线
相交于点
和点
两点.
![](https://img.xkw.com/dksih/QBM/2019/4/24/2189214869446656/2190008763432960/STEM/97aec345bfd04f02a70931f333ddf873.png?resizew=135)
(1)求抛物线的函数表达式;
(2)若点
是位于直线
上方抛物线上的一动点,当
的面积
最大时,求此时
的面积
及点
的坐标;
(3)在
轴上是否存在点
,使
是等腰三角形?若存在,直接写出
点的坐标(不用说理);若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ab466aedd6e176088d8dee7bc3e3aaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96dde9c4aad0536c069127df0d4b12f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58bdce0172c5a8b69d37d7e4006eeaab.png)
![](https://img.xkw.com/dksih/QBM/2019/4/24/2189214869446656/2190008763432960/STEM/97aec345bfd04f02a70931f333ddf873.png?resizew=135)
(1)求抛物线的函数表达式;
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53502463cc76201000e02df314e58769.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53502463cc76201000e02df314e58769.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc1ddff9c93c234562c44d1808831bc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
您最近一年使用:0次