如图,在正方形ABCD中,E为 BC上的点,F为 CD边上的点,且AE=AF,AB=4,设EC=x,△AEF 的面积为y,则y与x之间的函数关系式是____ .
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/31/5771f811-d588-4bf5-8a3f-e4252cb7d92a.png?resizew=119)
更新时间:2016-12-05 21:46:57
|
相似题推荐
填空题
|
适中
(0.65)
名校
【推荐1】如图所示,矩形的窗户分成上、下两部分,用
米长的塑钢制作这个窗户的窗框(包括中间档),设窗宽
(米),则窗的面积
(平方米)用
表示的函数关系式为________ ;要使制作的窗户面积最大,那么窗户的高是________ 米,窗户的最大面积是________ 平方米.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d02ea8c4988c5c28ab93f0d70fb55a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/2018/9/19/2035787738554368/2036324107403264/STEM/c78f6949f2494e13993603b635b2c8c6.png?resizew=51)
您最近一年使用:0次
填空题
|
适中
(0.65)
【推荐2】如图,假设篱笆(虚线部分)的长度是8m,则所围成矩形ABCD的最大面积是_____ m.
![](https://img.xkw.com/dksih/QBM/2020/5/23/2468974701346816/2469682469445632/STEM/1ebeedc03f164d51978a8a5fdbb0d203.png?resizew=129)
您最近一年使用:0次
填空题
|
适中
(0.65)
名校
【推荐1】如图,
是以平行四边形
的对角线
为边的等边三角形,点
与点E关于x轴对称,若点
的坐标为
,则
点的坐标是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80651f797ab9dccfd7163c605b091ad5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.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/fa1f81b42a9b8fd43c3b38acd79e71db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/5/f900c05c-acfd-47c4-a157-d4b5fe1b3bb1.png?resizew=207)
您最近一年使用:0次
填空题
|
适中
(0.65)
名校
【推荐2】在长方形
中,
,
,
,延长
至点E,连接
,
平分
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f76e37d6e6b182896ccaaa187cfe07.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07140f277a35733d8c97577ccdd4e3ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac679f877d3e3b3acef1f1f8e3654b4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3db3f03c05b28155f9c0d31abfab198.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f76e37d6e6b182896ccaaa187cfe07.png)
![](https://img.xkw.com/dksih/QBM/2023/10/11/3343642257620992/3352751048474624/STEM/4eea7346eca046d2961c65748506f6ec.png?resizew=180)
您最近一年使用:0次
填空题
|
适中
(0.65)
【推荐1】如图,在平面直角坐标系
中,矩形
的顶点B坐标为
,点D从点C沿
边运动到点B,以
为边作正方形
,连接
,在D运动过程中
面积的最小值是 ___________ .
![](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/13624f5c79f8e4d094fab31aa61afe9b.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/3ecc1cb55a57dde481f8dd07ab150676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4948f4794588985b582d247312cc210.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2ea13010e2399194be2a681310543e.png)
![](https://img.xkw.com/dksih/QBM/2023/2/20/3178614216794112/3185277347143680/STEM/0091334a1e0241cb90e8a1c734edf1dc.png?resizew=185)
您最近一年使用:0次
填空题
|
适中
(0.65)
名校
【推荐2】如图中有三个正方形,最大正方形的边长为18,则阴影部分的面积(平方单位)为______ .
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/27/71b9f6d3-1cc6-4e1b-be67-f8dfa0f8b236.png?resizew=142)
您最近一年使用:0次