如图,已知抛物线
与x轴交于点
和点
,现将抛物线L沿y轴翻折,得到抛物线
,点A和点B的对应点分别为
和
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/19/92d83d46-505a-40a4-b06f-af49b5b8f3ac.png?resizew=144)
(1)求抛物线
的解析式;
(2)抛物线
与y轴交于点C,在直线
上方的抛物线
上是否存在一动点P,使四边形
的面积最大?若存在,求出最大面积,并指出此时P点的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43091dee99247e22161194ddb2222d29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8314b1fdf7dcef270ac0a2567609242.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8748dc55e2f45bc37fc4d84d7310f79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172722d11ea7e01411fa06dbb82f46ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/19/92d83d46-505a-40a4-b06f-af49b5b8f3ac.png?resizew=144)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172722d11ea7e01411fa06dbb82f46ee.png)
(2)抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172722d11ea7e01411fa06dbb82f46ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172722d11ea7e01411fa06dbb82f46ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/486d971706b65c9d82b0fe7e7dd24653.png)
更新时间:2023-04-10 21:06:40
|
相似题推荐
解答题-问答题
|
适中
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【推荐1】如图,反比例函数
(
)的图象与一次函数
的图象交于
、
两点.
(2)若
是
轴正半轴上一点,且
,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05621b18b7ffc991d9f30380e2e08fea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49bdb3dac5792ec5fa1ce3f6e7561534.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c808286ae74fff452c866aa56a2cbed.png)
(2)若
![](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/b0f3e35763d0be4690acc2ab9af02186.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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【推荐2】甲、乙两辆汽车沿同一路线赶赴距出发地300千米的目的地,乙车比甲车晚出发1小时(从甲车出发时开始计时).图中折线
、线段
分别表示甲、乙两车所行路程
(千米)与时间
(小时)之间的函数关系对应的图象(线段
表示甲出发不足1小时因故停车检修).请根据图象所提供的信息,解决如下问题:
![](https://img.xkw.com/dksih/QBM/2022/1/17/2896299626938368/2897828622163968/STEM/54954867-f61c-4730-8e2d-b8c8a1419ba6.png?resizew=315)
(1)求乙车行驶的路程
与时间
的函数关系式;
(2)求甲车发生故障时,距离出发地多少千米;
(3)请直接写出第一次相遇后,经过多长时间两车相距30千米?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/843f13e4f03a47b2cab6da3f49762831.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2022/1/17/2896299626938368/2897828622163968/STEM/54954867-f61c-4730-8e2d-b8c8a1419ba6.png?resizew=315)
(1)求乙车行驶的路程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)求甲车发生故障时,距离出发地多少千米;
(3)请直接写出第一次相遇后,经过多长时间两车相距30千米?
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【推荐1】弹球游戏规则:弹球抛出后与地面接触一次,弹起降落,若落入筐中,则游戏成功.弹球着地前后的运动轨迹可近似看成形状相同的两条抛物线.如图,甲站在原点处,从离地面高度为
的点
处抛出弹球,当弹球运动到最高处,即距离地面
时,弹球与甲的水平距离为
.弹球在
处着地后弹起,此次弹起的最大高度为原来最大高度的一半,再落至点
处.
![](https://img.xkw.com/dksih/QBM/2020/11/2/2584234862804992/2585785064677376/STEM/3e9bfeaf09bf4ff0a02b133ac95dd2d3.png?resizew=428)
(1)求弹球第一次着地前抛物线的解析式(不要求写出
的取值范围)
(2)若不考虑筐的因素,求弹球第二次着地点到点
的距离.
(3)如果摆放一个底面半径为
,高
的圆柱形筐,且筐的最左端距离原点
,那么甲能投球成功吗?若能,请说说理由;若不能,请移动筐使甲投球成功,求筐的移动方向及移动距离
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef959a420dc4a40d40e1960a68d1acce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad491e5b5e14c49ef8b7004ebcfcef9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad491e5b5e14c49ef8b7004ebcfcef9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/2020/11/2/2584234862804992/2585785064677376/STEM/3e9bfeaf09bf4ff0a02b133ac95dd2d3.png?resizew=428)
(1)求弹球第一次着地前抛物线的解析式(不要求写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)若不考虑筐的因素,求弹球第二次着地点到点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(3)如果摆放一个底面半径为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69cb3d3c40e1519cb6ee5522247d32dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69cb3d3c40e1519cb6ee5522247d32dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/568ff53fc8fbdea03629899c052598b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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【推荐2】如图,抛物线
:
与
轴交于
,
两点(点
在点
的左侧),与
轴交于点
,且
,
为抛物线
的对称轴右侧上的点(不含顶点).
的值和抛物线的顶点坐标;
(2)设抛物线
在点
和点
之间部分(含点
和点
)的最高点与最低点的纵坐标之差为
,求
与
的函数解析式,并写出自变量
的取值范围;
(3)当点
的坐标满足
时,连接
.将直线
与抛物线
围成的封闭图形记为
.
①求点
的坐标;
②直接写出封闭图形
的边界上的整点(横、纵坐标都是整数的点)的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dc81d9855fa27c29a2ebe4e447f8010.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/49c8dbc31b2e14067ef2f34b4e25f114.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82aaa597a5aa6176863eda3fdf83e181.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82aaa597a5aa6176863eda3fdf83e181.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76de0ea2e4675af06152655e65549989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcfaca9396f85c0137b534903321fcbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcfaca9396f85c0137b534903321fcbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
①求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
②直接写出封闭图形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
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解答题-作图题
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【推荐1】已知
,点P在
的内部,点C和点P关于OA对称,点P关于OB的对称点是D,连接CD交OA于M,交OB于N,
.
![](https://img.xkw.com/dksih/QBM/2022/1/12/2899834210287616/2973483522711552/STEM/4663fc1c-7793-47ba-9832-113b25b747bc.png?resizew=115)
(1)补全图,并且保留作图痕迹.
(2)写出∠COD______°.△PMN的周长为______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6131160eaee962470abc7771df265c6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bafd21730b3a22d6b078eeb1a18bc468.png)
![](https://img.xkw.com/dksih/QBM/2022/1/12/2899834210287616/2973483522711552/STEM/4663fc1c-7793-47ba-9832-113b25b747bc.png?resizew=115)
(1)补全图,并且保留作图痕迹.
(2)写出∠COD______°.△PMN的周长为______.
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【推荐2】如图,已知
中
,
,垂足为D,
,
,求AD的长.小明同学将图形进行翻折,请按照小明的思路,探究并解答下列问题:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/29/c585ec8d-85be-439c-8871-c8ec5cdb4b9f.png?resizew=217)
(1)分别以AB、AC为对称轴,画出
、
的轴对称图形,D点的对称点为E、F,延长EB、FC相交于点G.证明四边形AEGF是正方形;
(2)求AD的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f81e24376a13d648c2ed0dc73bc710e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714cc3707bba3bfdb56e251999be8592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40560ea08d6cd8c1d4d9661ee6faaa3b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/29/c585ec8d-85be-439c-8871-c8ec5cdb4b9f.png?resizew=217)
(1)分别以AB、AC为对称轴,画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
(2)求AD的长.
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解答题-问答题
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【推荐1】如图,已知二次函数
的图像经过
两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/29/7819e7b3-0d3e-4704-90f5-a91dfc247a3d.png?resizew=149)
(1)求这个二次函数的解析式;
(2)求这个二次函数的对称轴、顶点坐标;
(3)设该二次函数的对称轴与x轴交于点C,连接
,求
的面积;
(4)若点D为抛物线与x轴的另一个交点,在抛物线上是否存在一点M,使
的面积为
的面积的2倍,若存在,请求出M的坐标,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0c9800e4b992044d16681e77ff6563c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68d3b39d45ef2399c06cc5b5e6cb09a1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/29/7819e7b3-0d3e-4704-90f5-a91dfc247a3d.png?resizew=149)
(1)求这个二次函数的解析式;
(2)求这个二次函数的对称轴、顶点坐标;
(3)设该二次函数的对称轴与x轴交于点C,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f48df51a712bcc7c5815575fdbf346a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(4)若点D为抛物线与x轴的另一个交点,在抛物线上是否存在一点M,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f9fba8a4098c1a0515286eb8d616dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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【推荐2】如图,函数y=-x2+bx+c的图象经过点A(m,0),B(0,n)两点,m,n分别是方程x2-2x-3=0的两个实数根,且m<n.
(1)求m,n的值以及函数的解析式;
(2)设抛物线y=-x2+bx+c与x轴的另一交点为点C,顶点为点D,连结BD、BC、CD,求△BDC面积;
(3)对于(1)中所求的函数y=-x2+bx+c,
①当0≤x≤3时,求函数y的最大值和最小值;
②设函数y在t≤x≤t+1内的最大值为p,最小值为q,若p-q=3,求t的值.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/7/2cdc5b15-43d2-4ec3-b79a-43f27811e2ef.png?resizew=121)
(1)求m,n的值以及函数的解析式;
(2)设抛物线y=-x2+bx+c与x轴的另一交点为点C,顶点为点D,连结BD、BC、CD,求△BDC面积;
(3)对于(1)中所求的函数y=-x2+bx+c,
①当0≤x≤3时,求函数y的最大值和最小值;
②设函数y在t≤x≤t+1内的最大值为p,最小值为q,若p-q=3,求t的值.
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