如图,一次函数
的图像与
轴和
轴分别交于
两点,与反比例函数
的图像分别交于
两点.
![](https://img.xkw.com/dksih/QBM/2023/1/9/3149216647061504/3156399896977408/STEM/2ff230a828e9460aa4dffaeeb514a7b0.png?resizew=219)
(1)动点
在线段
上(不与点
重合),过点
作
轴和
轴的垂线,垂足为
.当矩形
的面积为2时,求出点
的位置;
(2)在
轴上是否存在点
,使得以
为顶点的三角形与
相似?若存在,求出点
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e235d7dd12f948f5ffb2e5afddc95612.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/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c6a67f845cdcdfb0cd71af3fdb59aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c29a7e8eea08197bf53164a560bee58.png)
![](https://img.xkw.com/dksih/QBM/2023/1/9/3149216647061504/3156399896977408/STEM/2ff230a828e9460aa4dffaeeb514a7b0.png?resizew=219)
(1)动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6670479a0083dd2dfd5ad55b47b1ab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c40b8789cc8d81b3cf64f0b318ab982a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)在
![](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/00045940432a531a8f07034032d9248d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7ffcd1925a2b1259221c6a476152f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
更新时间:2023-01-19 22:14:56
|
相似题推荐
解答题-作图题
|
较难
(0.4)
【推荐1】如图,在平面直角坐标系
中,
,
,
,
,
.
(1)如果四边形
是长方形,请画出该长方形,并直接写出点
的坐标;
(2)将长方形
向右平移
个单位长度,得到长方形
.
①当点
落在线段
上时,结合图形直接写出此时
的值;
②横、纵坐标都是整数的点叫做整点,如果长方形
和三角形
重叠区域(不含边界)内恰好有3个整点,直接写出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f943121691740928470268b34781e06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bda45b7f565147f18a5c83bb8a23142.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb645218ed8779dba3055373f299b766.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1386d88b9dcad21dfad063f934153b3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e7422cbdb4ad06d155abb2ccdb25ded.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/15/38c0079b-6482-4b6f-a1f1-be31f000cbd7.jpg?resizew=310)
(1)如果四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d5a164bf56f8fb92527ad78bc10ccf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)将长方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d5a164bf56f8fb92527ad78bc10ccf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88c58b2e6ab4b15d0c72b394323aefdf.png)
①当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b1a5427d8ff23df0f3ec194756c84c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
②横、纵坐标都是整数的点叫做整点,如果长方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88c58b2e6ab4b15d0c72b394323aefdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a77343ecde1c2665df291761b6563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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解答题-问答题
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【推荐2】如图,在平面直角坐标系中,点
,点
为正方形
的两个顶点,点
和
在第一象限.
(1)求点
的坐标;
(2)求直线
的函数表达式;
(3)在直线
上是否存在点
,使
为等腰三角形?若存在,请直接写出点
的坐标;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c84818cfbd9a885081cb4e3294eabe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ef03f452410ab19c6246567c427178.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/16/25d6ee52-a657-4a15-8fc8-8029d3df5d7b.png?resizew=139)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(3)在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177678001b2ccde1db8f57fa5e017002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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解答题-问答题
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较难
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【推荐1】已知,如图,在平面直角坐标系中,四边形
是矩形,
满足
,P是线段
上一动点,D是x轴正半轴上一点,且
于E.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/3/9c9ad0fb-49f9-4794-8b53-acc1dc3b7310.png?resizew=195)
(1)
________,
________,
________;
(2)设P点坐标
,则
________;
(3)当点P运动时,
的值是否发生变化?若变化,说明理由;若不变,请求
的值;
(4)若
,求点D的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e75767b8b80cc1461a1addf2d308883c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b56d89def6b0ea21a7e8bbc76e15b645.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c0077a21eba1151ddf1fe53319a46db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e49d0c6cae8997e6399d7834d6c40801.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/3/9c9ad0fb-49f9-4794-8b53-acc1dc3b7310.png?resizew=195)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a00d6c5d80f95848a61f305e6bc394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
(2)设P点坐标
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a79a33a83a7ba57a34b5093d1d1d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edff1881635893293dd411ead8194aca.png)
(3)当点P运动时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
(4)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f48d96fbe995310aa5700fc5ec3e785f.png)
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【推荐2】如图,在平面直角坐标系中,点
的坐标为
,点
的坐标为
,直线
经过原点和点
,直线
经过点
和点
.点
是
轴上的一动点,过点
作直线
轴,交直线
于点
,交直线
于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/23/80d67930-0555-4ca1-a1ef-b5a03fb53850.png?resizew=324)
(1)求直线
,
函数关系式;
(2)设点
的横坐标为
,若点
在线段
上.
①若
,求四边形
的面积;
②若点
是线段
的三等分点,求
的值.
(3)过点
作直线
的对称点
,当点
在
轴上运动时,点
也随之运动.在此运动过程中,
是否存在最小值?若存在,求出该最小值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb24db2367cea20ab2f67db1bc0821ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe813ee3b97ae9757d0cc3246aab0551.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037a09a165148c1edecfe4c101fb9ef1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d1f8b64af9c981fdbc9b4f4396eb2a4.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2dcd849446295cbd268b3a8489268f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/23/80d67930-0555-4ca1-a1ef-b5a03fb53850.png?resizew=324)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66884efff7400f92b530d69d029778d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd7dbbb05e1fcfcbd181cf9d7402b736.png)
②若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3533837e3d08c461dea031a44e5424d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
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【推荐3】如图①,将□ABCD置于直角坐标系中,其中BC边在x轴上(B在C的左边),点D坐标为(0,4),直线MN:
沿着x轴的负方向以每秒1个单位的长度平移,设在平移过程中该直线被□ABCD截得的线段长度为m,平移时间为t,m与t的函数图像如图②所示.
(1)填空:点C的坐标为 ;
在平移过程中,该直线先经过B、D中的哪一点? ;(填“B”或“D”)
(2)点B的坐标为 ,n= ,a= ;
(3)求图②中线段EF的解析式;
(4)t为何值时,该直线平分□ABCD的面积?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb158a0a5e791f034015ff5afc01c13a.png)
(1)填空:点C的坐标为 ;
在平移过程中,该直线先经过B、D中的哪一点? ;(填“B”或“D”)
(2)点B的坐标为 ,n= ,a= ;
(3)求图②中线段EF的解析式;
(4)t为何值时,该直线平分□ABCD的面积?
![](https://img.xkw.com/dksih/QBM/2014/6/3/1573730351972352/1573730358337536/STEM/d530319b8ac843f58303701974193321.png)
您最近一年使用:0次
解答题-问答题
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较难
(0.4)
【推荐1】如图,已知直线
的函数表达式为
,且
与
轴、
轴分别交于
、
两点,动点
从
点开始在线段
上以每秒2个单位的速度向点
移动,同时动点
从
点开始在线段
上以每秒1个单位的速度向
点移动,设点
、
移动时间为
秒.
(1)求点
、
的坐标.
(2)当
为何值时,以点
、
、
为顶点的三角形与
相似?
(3)求出(2)中当以点
、
、
为顶点的三角形与
相似时,线段
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06bb80c6d18691920bb7c174f04940f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/ce755d22-e8b9-4770-a79b-4ebf6e923858.png?resizew=150)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/866b81a8384cce4f24867baca2e6820c.png)
(3)求出(2)中当以点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
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【推荐2】如图,已知抛物线L:y=x2+bx﹣4交y轴于点A,交x轴于点B(﹣4,0)、C.抛物线L关于原点O对称的抛物线为
,点A在抛物线
上的对应点为A'.
(1)求抛物线
的函数表达式;
(2)过点
作平行于x轴的直线l,点P是抛物线
上一动点,过点P作PQ⊥l于Q,连接
.若
,求点P的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97514e967dcbf87026b4d1b915b0c28f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97514e967dcbf87026b4d1b915b0c28f.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97514e967dcbf87026b4d1b915b0c28f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d7ffb7889a31b267a85f1ea238138e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97514e967dcbf87026b4d1b915b0c28f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ec18549be9b0f7a35761423636d8911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e2af31f32e25ebbeee489a74e9b939a.png)
![](https://img.xkw.com/dksih/QBM/2021/4/13/2698822613794816/2703265773043712/STEM/587231f1-d3e8-48b9-a40c-36dc8ab05ed7.png)
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【推荐1】如图,在平而直角坐标系中,记函数
的图象为G,直线
经过点
,与图象G交于B,C两点.
(2)当点B与点A重合时,点
在第一象限内且在直线l上,过点P作
轴于点Q.
①求点C的坐标;
②连接
.若
,求m的取值范围;
(3)横、纵坐标都是整数的点叫做整点.记图象G与直线l所围成的封闭区域(含边界)为W.当区域W的边界上有5个整点时,请直接 写出满足条件的整数k的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6956752841370820f393dc0e58cf406.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c54623bccef254857ad663fe6d18f320.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14f8297bca75733768012232c0780311.png)
(2)当点B与点A重合时,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90688751e58655291204fab149e744e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2784a52c4da98dc9df661fc152fc29e.png)
①求点C的坐标;
②连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5ca53929cb07c769b3880fcb5ca782f.png)
(3)横、纵坐标都是整数的点叫做整点.记图象G与直线l所围成的封闭区域(含边界)为W.当区域W的边界上有5个整点时,请
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【推荐2】如图,在并联电路中,电源电压为
,根据“并联电路分流不分压”的原理得到:
.已知
为定值电阻,当R变时,路电流
也会发生变化,且干路电流
与R之间满足如下关系:
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/9/560f619b-384f-4375-ad1b-3c8e2c3dc134.png?resizew=183)
(1)【问题理解】
定值电阻
的阻值为________Ω.
(2)【数学活动】
根据学习函数的经验,参照研究函数的过程与方法,对比反比例函数
来探究函数
的图象与性质.
①列表:下表列出
与R的几组对应值,请写出m的值:
________;
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/7/19e018ec-b76c-4e3a-bdf0-976b82f61df5.png?resizew=175)
②描点、连线:在平面直角坐标系中,以①给出的R的取值为横坐标,以
相对应的值为纵坐标,描出相应的点,并将各点用光滑曲线顺次连接起来.
(3)【数学思考】
观察图象发现:函数
的图象是由
的图象向________平移________个单位而得到.
(4)【数学应用】
若关于x的方程
在实数范围内恰好有两个解,直接写出k的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/418ab47f52d042e2836a452c9167368d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe4e068986e9cd34dd77bd17630c8e15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efc18a5bb2e53586331b2a58538a48b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c16aacf1dabe01ce18eea604c308872.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c16aacf1dabe01ce18eea604c308872.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41c7536a610a52ed9211e0916ad8e72f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/9/560f619b-384f-4375-ad1b-3c8e2c3dc134.png?resizew=183)
(1)【问题理解】
定值电阻
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efc18a5bb2e53586331b2a58538a48b.png)
(2)【数学活动】
根据学习函数的经验,参照研究函数的过程与方法,对比反比例函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bd41d39ec73706e32f80c209ee1ca6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41c7536a610a52ed9211e0916ad8e72f.png)
①列表:下表列出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c16aacf1dabe01ce18eea604c308872.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
R | … | 3 | 4 | 5 | 6 | … |
![]() | … | 2 | 1.5 | 1.2 | 1 | … |
![]() | … | 3 | m | 2.2 | 2 | … |
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/7/19e018ec-b76c-4e3a-bdf0-976b82f61df5.png?resizew=175)
②描点、连线:在平面直角坐标系中,以①给出的R的取值为横坐标,以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c16aacf1dabe01ce18eea604c308872.png)
(3)【数学思考】
观察图象发现:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41c7536a610a52ed9211e0916ad8e72f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bd41d39ec73706e32f80c209ee1ca6b.png)
(4)【数学应用】
若关于x的方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ec01ddae2e4e10360acc5b6b093690.png)
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