已知如图1,二次函数
与
轴交于点
,
两点,且点
在点
的右侧,与
轴交于点
,连结
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/14/710fbecf-dd6b-43fc-ac60-1961996a4200.jpg?resizew=324)
(1)求点
、
的坐标;
(2)如图
,将点
向下平移
个单位得到
,将
向左平移
个单位得
,将
向左平移
个单位得
,若
与
均在抛物线上,求
,
的值;
(3)如图
,点
是
轴下方,抛物线对称轴右侧图象上的一点,连结
,过
作
,与抛物线另一个交点为
,
,
为
上两点,且
轴,
轴.
①当
为直角三角形时,求点
的坐标;
②是否存在点
使得
与
相互平分,若存在,求
的长,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/894b3e8be1c849bc199db5b1f6a66658.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/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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/14/710fbecf-dd6b-43fc-ac60-1961996a4200.jpg?resizew=324)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad491e5b5e14c49ef8b7004ebcfcef9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c296e45b84cf67a98939aa7334e7d478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c296e45b84cf67a98939aa7334e7d478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(3)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/259a6725a9231c13ee8775d84ea397ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a9a8ae6c15072d8ae52b43c8edd9cac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59e6c37a5df9841b300ab06b6f14fb4b.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72b886208c6c2df19b984f2631e1c996.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
②是否存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce2790947716b1cfa9c5e7a65db4093.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
更新时间:2023-11-03 23:13:19
|
相似题推荐
解答题-应用题
|
较难
(0.4)
【推荐1】如图1是一个含有两个斜坡截面的轴对称图形,两个斜坡材质等各方面都一样.一个黑球从左斜坡顶端由静止滚下后沿水平木板
直线运动,其中
.从黑球运动到
点处开始,用频闪照相机、测速仪测量并记录黑球在木板上的运动时间
(单位:
)、运动速度
(单位:
)、滑行距离
(单位:
)的数据.记录的数据如表:
关于
,
关于
的函数图象,并分别求出
关于
,
关于
的函数表达式.
(2)①求黑球在水平木板
上滚动的最大距离.
②黑球从左斜坡顶端由静止滚下到
点开始计时,运动到2秒的同时,有一个除颜色外其余与黑球完全相同的白球,从右斜坡顶端由静止滚下到点
处,两球会在水平木板
的某个位置相遇吗?若能相遇,请求出相遇点
到
点的距离;若不能相遇,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c55b9e7a26ebb33d016f0e09e4e530d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d65502a7ea4d1ce6d6d8c720845c73e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc13a607ac0c7f76d252d7cb1bb040fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc1dce4a03cf2c9a68b2399d4339a035.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
运动时间![]() | 0 | 2 | 4 | 6 | 8 | 10 | … |
运动速度![]() | 12 | 10 | 8 | 6 | 4 | 2 | … |
运动距离![]() | 0 | 22 | 40 | 54 | 64 | 70 | … |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc13a607ac0c7f76d252d7cb1bb040fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc13a607ac0c7f76d252d7cb1bb040fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)①求黑球在水平木板
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
②黑球从左斜坡顶端由静止滚下到
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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解答题-问答题
|
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【推荐2】如图,已知抛物线
与x轴交于A、B两点,与y轴交于点C,点B的坐标为
.
![](https://img.xkw.com/dksih/QBM/2022/5/19/2982705704067072/2984391978917888/STEM/a7e64fee-3d62-4bb9-b324-aaf40f0279ed.png?resizew=197)
![](https://img.xkw.com/dksih/QBM/2022/5/19/2982705704067072/2984391978917888/STEM/08642920-5b76-4c22-9ab2-5243fe2bdacb.png?resizew=197)
(1)求m的值及抛物线的顶点坐标;
(2)点P是抛物线对称轴l上的一个动点,当
的值最小时,求点P的坐标;
(3)设点F是抛物线上一点,其横坐标为-2,在抛物线上是否存在一点M,使得AM被直线BF平分?若存在,请求出点M的坐标;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52387621283198eb16bea9c41fee46ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88c3a2f5b0702ea9fbb9dc8904579737.png)
![](https://img.xkw.com/dksih/QBM/2022/5/19/2982705704067072/2984391978917888/STEM/a7e64fee-3d62-4bb9-b324-aaf40f0279ed.png?resizew=197)
![](https://img.xkw.com/dksih/QBM/2022/5/19/2982705704067072/2984391978917888/STEM/08642920-5b76-4c22-9ab2-5243fe2bdacb.png?resizew=197)
(1)求m的值及抛物线的顶点坐标;
(2)点P是抛物线对称轴l上的一个动点,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a51a8d10345f567e0f2daf18529d42f0.png)
(3)设点F是抛物线上一点,其横坐标为-2,在抛物线上是否存在一点M,使得AM被直线BF平分?若存在,请求出点M的坐标;若不存在,说明理由.
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(0.4)
【推荐1】如图,在平面直角坐标系中,抛物线y=ax2-
x+c经过点A(-1,0),B(4,0),与y轴交于点C,点P是x轴下方的抛物线上一动点(包含点A、B).作直线BC,若过点P作x轴的垂线,交直线BC于点Q.
(1)求抛物线的解析式;
(2)在点P的运动过程中,是否存在点P,使△CPQ是等腰三角形?若存在,直接写出点P的横坐标,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
(1)求抛物线的解析式;
(2)在点P的运动过程中,是否存在点P,使△CPQ是等腰三角形?若存在,直接写出点P的横坐标,若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/5/426ae6b1-0310-4156-b1b1-1ad3104d3a05.png?resizew=172)
您最近一年使用:0次
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较难
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【推荐2】在平面直角坐标系
中,矩形
的顶点A,C的坐标分别为
,
,顶点为M的抛物线
经过点A,B,且与x轴交于点D,E(点D在点E的左侧).
(2)点P是(1)中抛物线对称轴上一动点,求
为等腰三角形时,求P的坐标;
(3)平移抛物线
,使抛物线的顶点始终在直线
上移动,在平移的过程中,当抛物线与线段
有公共点时,求抛物线顶点的横坐标a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fed700b7a3ab2ee7fbae12507033af9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c0573e2af8a0dc8c6a1c0af067a324f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.png)
(2)点P是(1)中抛物线对称轴上一动点,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a675310c8ba418e5a59beb7317e21e.png)
(3)平移抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
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解题方法
【推荐1】如图,抛物线
与
轴交于
,
两点,与
轴交于点
,且
,连接
,直线
与
轴交于点
,与
上方的抛物线交于点
,与
交于点
.
![](https://img.xkw.com/dksih/QBM/2021/4/29/2710102249447424/2718720499515392/STEM/95dcaf82-7f9f-4304-8428-75c8b54c536b.png?resizew=457)
(1)求点
,
的坐标及抛物线的解析式;
(2)设
的面积为
,
的面积为
,当
最大时,求
的值:
(3)在(2)的条件下,点
是抛物线上一点,点
是直线
上一点,是否存在以
,
,
,
为顶点的四边形是平行四边形,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/f497edc43c7c00951095a8b81d6d7644.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98ec3d75e53b990bc8f9a4622928dd21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27b583230a32b774445332490c511989.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/20ead63ec9cb727081f78e09bd08d11e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53cd24fdb222c2e68c05c21600383df3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/2021/4/29/2710102249447424/2718720499515392/STEM/95dcaf82-7f9f-4304-8428-75c8b54c536b.png?resizew=457)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff39c7aa648afd1080206c8080ff79e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df7626240940eb340420a605e95aeee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235f0a6fb218d28383e6f27f2df1f50f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)在(2)的条件下,点
![](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/e6e490f703eb6c9bb1278c78ebc2d661.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
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(0.4)
【推荐2】如图在平面直角坐标系中,四边形OABC是菱形,点C的坐标为(3,4),平行于对角线AC的直线m从原点O出发,沿x轴正方向以每秒1个单位长度的速度运动,设直线m与菱形OABC的两边分别交于点M、N,直线m运动的时间为t(秒).
![](https://img.xkw.com/dksih/QBM/2019/4/11/2179998095130624/2183845148082176/STEM/8175c47859684a48a1d1e2d9e90d3cd9.png?resizew=528)
(1)求点B的坐标;
(2)当MN=
AC时,求t的值;
(3)设△OMN的面积为S,求S与t的函数表达式,并确定S的最大值.
![](https://img.xkw.com/dksih/QBM/2019/4/11/2179998095130624/2183845148082176/STEM/8175c47859684a48a1d1e2d9e90d3cd9.png?resizew=528)
(1)求点B的坐标;
(2)当MN=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(3)设△OMN的面积为S,求S与t的函数表达式,并确定S的最大值.
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解答题-问答题
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较难
(0.4)
【推荐3】如图1,已知△ABC中,AB=10cm,AC=8cm,BC=6cm.如果点P由B出发沿BA方向点A匀速运动,同时点Q由A出发沿AC方向向点C匀速运动,它们的速度均为2cm/s.连接PQ,设运动的时间为t(单位:s)(0≤t≤4).解答下列问题:
![](https://img.xkw.com/dksih/QBM/2013/12/23/1573691408023552/1573691414339584/STEM/a7a7a6ce7af24c8585d12cf23431cbfb.png)
(1)当t为何值时,PQ∥BC.
(2)设△AQP面积为S(单位:cm2),求S与t的函数关系式
(3)是否存在某时刻t,使四边形BPQC的面积为△ABC面积的三分之二?若存在,求出此时t的值;若不存在,请说明理由.
(4)如图2,把△AQP沿AP翻折,得到四边形AQPQ′.那么是否存在某时刻t,使四边形AQPQ′为菱形?
![](https://img.xkw.com/dksih/QBM/2013/12/23/1573691408023552/1573691414339584/STEM/a7a7a6ce7af24c8585d12cf23431cbfb.png)
(1)当t为何值时,PQ∥BC.
(2)设△AQP面积为S(单位:cm2),求S与t的函数关系式
(3)是否存在某时刻t,使四边形BPQC的面积为△ABC面积的三分之二?若存在,求出此时t的值;若不存在,请说明理由.
(4)如图2,把△AQP沿AP翻折,得到四边形AQPQ′.那么是否存在某时刻t,使四边形AQPQ′为菱形?
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