(1)如图①,矩形
的面积为S,请在矩形内部找一点E,并画出点E,使得
的面积为
;(画出一点即可)
(2)如图②,在等腰
中,顶角
,点D是
的中点,连接
,过点D作
于点B,
交
于F.求证:
;
(3)如图③,李师傅有一块形如五边形
的钢板,其中
,
,
,
,
,
.点P是钢板内的一动点,
的面积为
,连接
,点M是
的中点,现要从该钢板上切割出一个四边形部件
,点G、F分别在
上,
,
,切痕分别为
,现要对切痕
进行处理,需要知道切痕的总长,请你帮李师傅求出切痕
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cb3e973f4e9361e1d23a0ab56006d12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70a80b31f7ad4793b8097d7f5dac0aac.png)
(2)如图②,在等腰
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab926d89b65f26c12e3da73ef1e5cf68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/100b3e7dcd5f34c5234971cd75bff138.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/409f018641c276f5868fd202b68c4556.png)
(3)如图③,李师傅有一块形如五边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e17a40645e3642653f80e8a9efe89b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4495603c13783e7e3695be4615b248bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69b755ee4dda4a72063c6fba125720a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e27de33a9e99628a0f199cd2612b74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0c8572270c5b38f3fc289db971bef3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/985e3046ac7fbe8f6ddf4968f65e9f1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4234cf4d8159f5df0333bcc269ffe099.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20c21bba88371276e82c75801b1ad87e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c8cbb66fd490165190208f965074371.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/488c65067ebfe6cfbcf006f0be431518.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1fe858642d1e2ff825dc59f64d25e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0717a054496a1f7399a740c99987625a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dab322b9a2f329a97b421a654794286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dab322b9a2f329a97b421a654794286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7b60f776a1ee1c056f59b845d24353a.png)
2024·陕西汉中·二模 查看更多[1]
更新时间:2024-05-26 11:44:52
|
相似题推荐
解答题-问答题
|
困难
(0.15)
【推荐1】如图,在平面直角坐标系中,抛物线
交
轴负半轴于点
(点
在点
左边),交
轴于点
.
(1)求抛物线解析式;
(2)点
为对称轴右
轴下方的侧抛物线上一点,射线
关于
轴对称图形(射线
)交抛物线于点
,若点
的横坐标为
,点
的横坐标为
,求
与
的函数关系式;
(3)在(2)的条件下,射线
分别交抛物线对称轴于点
,过点
作
轴的平行线
,在对称轴左侧作
交
于点
,
,连接
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.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/74011c7c6a65b1fcabb140074462e243.png)
(1)求抛物线解析式;
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce066003c0a1f0879cbca2f32802e9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce066003c0a1f0879cbca2f32802e9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)在(2)的条件下,射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ed33f851027978e3a7caa39bc679d8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a51949f48ee8cf746851ba779b078e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b8db072e2b6104671b82f948012fb45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b3b0b11a80e8b107e55534d7fda9f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b8db072e2b6104671b82f948012fb45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d99ae55bbd03bc45b96ed05d35eec653.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6515d910b9e0324cd1d5a45c3a80775.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b52abfd749a5170bacdbd884519920.png)
![](https://img.xkw.com/dksih/QBM/2021/2/3/2649957609152512/2651692248940544/STEM/d27c144a-f3fe-4d6d-8acc-ffe41283902f.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
【推荐2】已知
中,
,
,E是射线
上一点(不与点B重合),线段
的垂直平分线与边
交于点D.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/23/f8c977d9-f354-4167-83e9-55b9d444454b.png?resizew=505)
(1)点E在边
上,
①如图1,连接
,如果
平分
,求
的长;
②如图2,射线
交射线
于点F,设
,
,求y关于x的的数解析式,并写出定义域.
(2)如果
是直角三角形,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c8817091d0f4b7d7ac6df560cb63c68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07140f277a35733d8c97577ccdd4e3ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41ff8c8d239cc12ddc3a899e9f054aa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0213c5787a5a6b38d11bceca5567f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/23/f8c977d9-f354-4167-83e9-55b9d444454b.png?resizew=505)
(1)点E在边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41ff8c8d239cc12ddc3a899e9f054aa9.png)
①如图1,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b41d4070854edfaa24071137b314cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b41d4070854edfaa24071137b314cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
②如图2,射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14b49022a6f55817b5d7e3ab443b5491.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61c34eff4d793873d9e812d75d90fd10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c398a7d5ff7ddde6fce805e559e3e80d.png)
(2)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
您最近一年使用:0次
解答题-证明题
|
困难
(0.15)
名校
【推荐1】已知四边形
中,
,
,
.
![](https://img.xkw.com/dksih/QBM/2022/10/15/3088243551272960/3095371034206208/STEM/db4a751b53304603949664e1a1e45141.png?resizew=154)
(1)如图1,求证:四边形
为平行四边形;
(2)如图2,过A作
于E,若
,
平分
.求证:
;
(3)如图3,在(2)的条件下,M是
上一点,连接
,H为
的中点,连接
,若
,
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17b18fe6b00372a6f34066d80e812e98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f01fb34062af96f8ba7e1e05fb5f862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3002837ab696969c2697414c2a72f79d.png)
![](https://img.xkw.com/dksih/QBM/2022/10/15/3088243551272960/3095371034206208/STEM/9af787878eaa40f68dce787db11b3fc3.png?resizew=178)
![](https://img.xkw.com/dksih/QBM/2022/10/15/3088243551272960/3095371034206208/STEM/0bf457ece75c4d3db529989e6b9ba606.png?resizew=182)
![](https://img.xkw.com/dksih/QBM/2022/10/15/3088243551272960/3095371034206208/STEM/db4a751b53304603949664e1a1e45141.png?resizew=154)
(1)如图1,求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)如图2,过A作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ef273b41556630f0ca516039571dacc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/717317fccc81c122d0001c061039ab12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f3451cdec93244b55037cf6618ba6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e73d9e803df7fcc83a82750d6f638140.png)
(3)如图3,在(2)的条件下,M是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2e2c0d4ac2bd79f6cea7a9b1a50662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53b95463a97c60db3250cb641bf6523d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41d5e077dbcaa99b7a67a8449f96b13b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1906069da566ad26878d4c295fc2de53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba8f3dad94b049ddfbbd674996bfb8aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
您最近一年使用:0次
解答题-问答题
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(0.15)
名校
【推荐2】如图,已知直线y=kx+3k与x轴、y轴分别交于点A、点B,直线y=ax+b分别交x轴、y轴于D、C两点,直线AB与直线CD交于点G,且OA=OC.
![](https://img.xkw.com/dksih/QBM/2022/3/12/2934839963721728/2936555470462976/STEM/48f685e8-41d7-4923-acd1-f56b06fb9665.png?resizew=349)
(1)求b的值.
(2)点Q是射线DC上一动点,过点Q作x轴的平行线交第三象限的角平分线于点P,交y轴于点F,点P的横坐标为t,线段CF的长为d,求d与t的函数关系式.
(3)在(2)的条件下,当点Q在第四象限时,连接AP交直线CD于点E,射线OP交直线CD于点H,AP⊥CD,且∠OHC-∠GAE=∠DOH,过点O作
交直线AB于点M,MB+AG=AD,求点Q的坐标.
![](https://img.xkw.com/dksih/QBM/2022/3/12/2934839963721728/2936555470462976/STEM/48f685e8-41d7-4923-acd1-f56b06fb9665.png?resizew=349)
(1)求b的值.
(2)点Q是射线DC上一动点,过点Q作x轴的平行线交第三象限的角平分线于点P,交y轴于点F,点P的横坐标为t,线段CF的长为d,求d与t的函数关系式.
(3)在(2)的条件下,当点Q在第四象限时,连接AP交直线CD于点E,射线OP交直线CD于点H,AP⊥CD,且∠OHC-∠GAE=∠DOH,过点O作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7219d4e60ad8bfbd186436f213f3610.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
名校
【推荐1】如图1,已知抛物线
交x轴于A,B两点,交y轴于C,若
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/12/416066d0-96d9-43d2-8caa-9330934a3533.png?resizew=672)
(1)求抛物线的解析式;
(2)如图2,抛物线的对称轴交x轴于Q,P为第一象限对称轴右侧抛物线上一点,连接
、
,将线段
绕点B顺时针旋转
得到线段
,将线段
绕点A逆时针旋转
得到线段
,连接
交抛物线对称轴于点M,求M点坐标;
(3)如图3,在(2)的条件下,点G是x轴下方对称轴上一点,在抛物线对称轴右侧作矩形
,使得
,连接
并延长交第三象限抛物线于H,T为
上一点,连接
,
交
于N,若
,
,求点H的横坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40d398e31d27052f0b689bb30706faac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/12/416066d0-96d9-43d2-8caa-9330934a3533.png?resizew=672)
(1)求抛物线的解析式;
(2)如图2,抛物线的对称轴交x轴于Q,P为第一象限对称轴右侧抛物线上一点,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
(3)如图3,在(2)的条件下,点G是x轴下方对称轴上一点,在抛物线对称轴右侧作矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b51140e1a05f5050ce05793d4e0d753b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8355361f4d30dc7a0a65d2dba3af391.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632917e61f4208959686d118c7f19231.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5bdbbd3084ddc946e12d530d2192522.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa40a126b76e8cd700d653eaefd2b93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b6fb0185d4a13fae9d8dab8b4e18a68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67c015d99f2677951bdcd0447240ef93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f42036d151a4ab2d13d2cc135da5873a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/782ff8f47b3774944ada1584c5f6f455.png)
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【推荐2】如图1,抛物线y=ax2+bx+c与x轴交于点A(1,0)、B(4,0),与y轴交于点C(0,4).
(1)
(2)
(1)直接写出抛物线的函数表达式.
(2)如图2,D为抛物线
对称轴上的一点,
是否存在最大值,若存在,求出这个最大值及点D的坐标;若不存在,请说明理由.
(3)连接AC,M为x轴上的点,点Q在抛物线
上,若存在以点C,Q,M为顶点的
,请求出点M的坐标,若不存在请简单说明理由(点M不与点O重合).
![](https://img.xkw.com/dksih/QBM/2022/5/17/2981215723241472/2987212124463104/STEM/6187535a176447f4ba6a3c62c6833490.png?resizew=167)
![](https://img.xkw.com/dksih/QBM/2022/5/17/2981215723241472/2987212124463104/STEM/72dc8cc64b1d434797ebb0327020f8c9.png?resizew=169)
(1)直接写出抛物线的函数表达式.
(2)如图2,D为抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a875113bcf8295ba8146db96544c1644.png)
(3)连接AC,M为x轴上的点,点Q在抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d6af10e5e63a8166c003576db9e79eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed8ba74fb16abf218edd74db99a4731f.png)
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【推荐1】如图,在Rt
中,∠ACB=90°,
,AC=4;D是BC的延长线上一个动点,∠EDA=∠B,AE//BC.
(1)找出图中的相似三角形,并加以证明;
(2)设
,
,求
关于
的函数解析式,并写出函数的定义域;
(3)当
为等腰三角形时,求AE的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/905f306dc08525842a96cfcab32c1ce8.png)
(1)找出图中的相似三角形,并加以证明;
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd4a7d7c2253a1686c61f8b8f3f6c6a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0f6916dda37517e10bba4ce71efe7b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://img.xkw.com/dksih/QBM/2019/10/21/2316823382712320/2318302566850561/STEM/15f65540ebe44ca0af878e82464cc891.png?resizew=217)
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【推荐2】如图,在平面直角坐标系中,抛物线
过点
且交x轴于点
,点B,交y轴于点C,顶点为D,连接
,
.
(2)点P是直线
下方抛物线上的一动点,过点P作
交x轴于点M,
轴交
于点H,求
的最大值,以及此时点P的坐标.
(3)连接
,把原抛物线沿射线
方向平移
个单位长度后交x轴于
,
两点(
在
右侧),直线l为新抛物线的对称轴且交x轴于点F.若点G为x轴下方新抛物线上一动点,连接
,
且直线
,
分别交直线l于点T,R,连接
,
,记
,
的面积分别为
,
.试探究:在点G运动的过程中,
是否为定值?若是,请求出该定值并说明理由;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9553fb9beb9ed49ea5f7a0f077884d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d13aee52677b81031d06518932b1e5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8950c7bc835103d52ceffab14b6b31a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)点P是直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c04a48b5c5a4d65b7cd999c678d9161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/362cdc132883c8de75c429b9f67fad5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d65d92ac088df79eaa3696e6ccac1b69.png)
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533a7b702ada1dd80123e4041271d521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb2787c09a6dd07ba5ab7af7f2856711.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a68fe8a193638efe7f3a864fa07cee97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb2787c09a6dd07ba5ab7af7f2856711.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a68fe8a193638efe7f3a864fa07cee97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be99fa94a1f3e4964fcc13a14fab9ba5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6da2235c42867f9a79007c3fc83fec9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77dedbdec4342a2a74755c31017bb52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbcb4b6919fbb7f783dfdc9bef8f3e02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4c21cbb1c2bcbcb8391ac5a879f2ae0.png)
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【推荐3】在平面直角坐标系中,点O为坐标原点,抛物线
交x轴的负半轴于点A,交x轴的正半轴点B,交y轴的正半轴于点C,且OB=2OC.
(1)求a的值;
(2)如图1,点D、P分别在一、三象限的抛物线上,其中点P的横坐标为t,连接BP,交y轴于点E,连接CD、DE,设△CDE的面积为s,若
,求点D的坐标;
(3)如图2,在(2)的条件下,将线段DE绕点D逆时针旋转90°得到线段DF,射线AE与射线FB交于点G,连接AP,若∠AGB=2∠APB,求点P的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/526bb5b206810f46a51d960f58510779.png)
(1)求a的值;
(2)如图1,点D、P分别在一、三象限的抛物线上,其中点P的横坐标为t,连接BP,交y轴于点E,连接CD、DE,设△CDE的面积为s,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3a6017b56b11838af433e8c9bdee349.png)
(3)如图2,在(2)的条件下,将线段DE绕点D逆时针旋转90°得到线段DF,射线AE与射线FB交于点G,连接AP,若∠AGB=2∠APB,求点P的坐标.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/72551038-553e-4662-8a2d-3b55933146bc.png?resizew=371)
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