已知抛物线,
与
轴交于
、
两点,与
轴交于点
,且抛物线
的对称轴为直线
.
(1)抛物线的表达式;
(2)若抛物线
与抛物线
关于直线
对称,抛物线
与
轴交于点
,
两点(点
在点
左侧),要使
,求所有满足条件的抛物线
的表达式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd1ec9d9f725ad4d601990c17ae16ec9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.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/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(1)抛物线的表达式;
(2)若抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf90af48c665ee801c05cc55914b8fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36d71f015144ffaf1faec94a259b4a06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf90af48c665ee801c05cc55914b8fd.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735e92f3df758118314f287691c0a086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf90af48c665ee801c05cc55914b8fd.png)
更新时间:2023-05-16 22:18:33
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图,在斜坡
底部点
处设置一个可移动的自动喷水装置,喷水装置的高度
为
米,喷水装置从A点喷出的水流可以近似的看成抛物线,当喷出的水流与喷水装置的水平距离为
米时,达到最大高度
米.以点
为原点,喷水装置所在的直线为
轴,建立平面直角坐标系,
(1)求抛物线的表达式;
(2)斜坡上距离
水平距离为
米处有一棵高度为
米的小树
,
垂直水平地面且
点到水平地面的距离为
米.如果要使水流恰好喷射到小树顶端的点
,请求出自动喷水装置应向后平移(即抛物线向左平移)多少米
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d4d3ac67dac7a4c48fbfb053a735b88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/25/b24493a7-f306-4992-a5bc-0e7df2ae7c29.png?resizew=346)
(1)求抛物线的表达式;
(2)斜坡上距离
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3304e23f3b0f9569c4140ca89b6498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f0ef824845a450279d4af3b998b95c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d567bdeba9b8e17d0911f594e141eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3c8af0b2909df6ec5786c316662919c.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
|
适中
(0.65)
【推荐2】已知某抛物线的对称轴为直线
,且过
和
两点.
(1)求此抛物线的解析式;
(2)填空:
①当
时,
值所对应的范围是___________;
②若将此抛物线向下平移
个单位与
轴有公共点时,则
的范围是___________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52ae286ae8a209bc659ace6354b79abf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d64888af7b6b36177113b2a395c45665.png)
(1)求此抛物线的解析式;
(2)填空:
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/836d745b71ec18b1135e8bbf6990bffa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
②若将此抛物线向下平移
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】小明同学在用描点法画二次函数y1=ax2+bx+c的图象时,由于粗心,他算错了一个y值,列出了下面表格:
(1)请求出这个二次函数解析式;
(2)请指出这个错误的y值,并说明理由;
(3)若直线y2=mx+n经过(0,5)和(3,14)两点,则当y1<y2时,请直接写出x的取值范围.
x | … | ﹣1 | 0 | 1 | 2 | 3 | … |
y=ax2+bx+c | … | 12 | 5 | 2 | 5 | 14 | … |
(2)请指出这个错误的y值,并说明理由;
(3)若直线y2=mx+n经过(0,5)和(3,14)两点,则当y1<y2时,请直接写出x的取值范围.
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐2】有一座桥,桥孔的形状是一条开口向下的抛物线
(1)画出桥孔抛物草图;
(2)利用图象求:当水平线离开抛物线顶点2米时,水面的宽是多少米?
(3)利用图象求:当水面宽为6米时,水平线离顶点的距离为多少米?(精确到
米)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b8c4f0b6727072be4e51cf419a4d8c.png)
(1)画出桥孔抛物草图;
(2)利用图象求:当水平线离开抛物线顶点2米时,水面的宽是多少米?
(3)利用图象求:当水面宽为6米时,水平线离顶点的距离为多少米?(精确到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a87796ee30e6c5d5e6b6285b32abe10c.png)
您最近一年使用:0次