如图1,在平面直角坐标系中,直线
与
轴交于点
,与
轴交于点
,且
满足:
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/25/7a8732c8-e714-4616-84cb-f94a54c27673.png?resizew=311)
(1)求:
的值;
(2)
为
延长线上一动点,以
为直角边作等腰直角
,连接
,求直线
与
轴交点
的坐标;
(3)在(2)的条件下,当
时,在坐标平面内是否存在一点
,使以
为顶点的四边形是平行四边形,如果存在,直接写出点
的坐标,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d7a6fd6d651ae341154c2e40928d628.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db9100f0df5302cd5596b7a653bc1943.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84f5d524d18fb926347021d578086b2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ccebb22ffce0ff0351408c323cef144.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/25/7a8732c8-e714-4616-84cb-f94a54c27673.png?resizew=311)
(1)求:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29aa828f2bd9a5e63ee58dcaa9d0d336.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f2281cb6df0c3c518ce5ed19a02b57e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1642eec556eb252de9c1ab7bb5ca90b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1642eec556eb252de9c1ab7bb5ca90b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(3)在(2)的条件下,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42378d98922f7ccd89a4d8ff7e267400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a3d1edbad451c1cc63be5ffb9b98018.png)
更新时间:2022-12-19 14:19:45
|
相似题推荐
解答题-问答题
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较难
(0.4)
【推荐1】如图,在平面直角坐标系中,
为坐标原点,
为等腰三角形,
,点
在
轴上,点
的坐标为
,点
在
轴上,点
的坐标为
,
的周长为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/889b4ea2-b4a0-457e-aee6-673820e46afd.png?resizew=203)
(1)求点
的坐标及
的长;
(2)在
轴上有一个动点
,点
从点
出发,以每秒
个单位长度的速度沿线段
向点
运动,到点
停止.设点
的运动时间为
秒,当
为何值时,
的面积等于
面积的
?
(3)在
轴上存在一点
,使
是以
为腰的等腰三角形,请直接写出点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8618fe66f701cc00577a6f7d38d35e49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fde166eb8fe559975f88ef7a3fcc76f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea6122413ab3884330387df053e0b364.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/59f2be8f1e796226f1b0fa95f6aea35d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e9c2896634752d9e9a1caa1ca7a75d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/889b4ea2-b4a0-457e-aee6-673820e46afd.png?resizew=203)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)在
![](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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ac5396c5ea442e0364b50c1db3d2da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
(3)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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【推荐2】如图,在平面直角坐标系中,
为坐标原点,点
为第三象限内一点,
轴于点
,
,
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/30/cd8002ae-97f7-421a-aa01-d77d43e5fe0b.png?resizew=523)
(1)如图
,求点
的坐标:
(2)如图
,点
在
轴的负半轴上,点
在
的垂直平分线上,连接
、
、
,且
,连接
,求
的度数;
(3)如图
,在(2)的条件下,点
与点
关于直线
对称,
于点
,连接
,当
的面积为
时,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24624dffd30b66a5e4de57362b32b2a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d42e97eee705d164e6ac6de9ecd6d1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82fe779ce227b094ac9e10ab096e6b74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc68a0d1b545339463451349dfd8db6e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/30/cd8002ae-97f7-421a-aa01-d77d43e5fe0b.png?resizew=523)
(1)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/587458141d890533c0c32aa249a27ad0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4189a0821a0ffab9dc171ecd279ba442.png)
(3)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb4ca88283eb868dd132679b265347a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a54de7e539151a11b1aeed986057c6b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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较难
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【推荐1】对于平面直角坐标系
内的点
和图形
,给出如下定义:如果点
绕原点
顺时针旋转
得到点
,点
落在图形
上或图形
围成的区域内,那么称点
是图形
关于原点
的“伴随点”.
(1)已知点
,
,
.①在点
,
,
中,点________是线段
关于原点
的“伴随点”;②如果点
是
关于原点
的“伴随点”,求
的取值范围;
(2)
的圆心坐标为
,半径为1,如果直线
上存在
关于原点
的“伴随点”,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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee6765a83140d745a6de4c85d9b6b50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee6765a83140d745a6de4c85d9b6b50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(1)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9c59f0e35b7ae5206e45878934482b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d49a31f8e8dba418bd5d886998ef8d17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e6975f591732cb9758fe76a2e12557.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/640a608518f7cffb5454249f4f915e34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3baa9095863d7c0f6920b381cb43621b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d93935cb7980a2a185e64c8947671161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/732c018e69d42df32aaac87095890b81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d5ab74296abcbcf994c02b5834cd699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26c9e6536dd347d9079bee07eaf4580c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0a78c1511c14449ef6ce8321d890405.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d5ab74296abcbcf994c02b5834cd699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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名校
【推荐2】已知直线AB与y轴交于点A(0,8),与x轴交于点B(
,0),如图1所示.
![](https://img.xkw.com/dksih/QBM/2021/12/11/2870224716783616/2930232476639232/STEM/5332362c-64ff-48f5-a95f-b1c4fdffc238.png?resizew=368)
(1)直接写出AB的函数解析式;
(2)如图2,将线段AB绕着点B顺时针方向旋转90°得到线段BC,连结AC,点M、N在线段AC上,且点M在A、N之间,CN=4,∠MBN=45°;
①直接写出点C的坐标;
②求△MBN的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://img.xkw.com/dksih/QBM/2021/12/11/2870224716783616/2930232476639232/STEM/5332362c-64ff-48f5-a95f-b1c4fdffc238.png?resizew=368)
(1)直接写出AB的函数解析式;
(2)如图2,将线段AB绕着点B顺时针方向旋转90°得到线段BC,连结AC,点M、N在线段AC上,且点M在A、N之间,CN=4,∠MBN=45°;
①直接写出点C的坐标;
②求△MBN的面积.
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【推荐1】如图,二次函数
的图象与x轴交于点A和B,点B的坐标是(4,0),与y轴交于点C(0,-3),点D在抛物线上运动.
![](https://img.xkw.com/dksih/QBM/2022/11/15/3110366720172032/3167469287415808/STEM/853587aab58c4c61a200edfc811eff32.png?resizew=132)
(1)求抛物线的表达式;
(2)当点E在x轴上运动时,探究以点B,C,D,E为顶点的四边形是平行四边形,并直接写出点E的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69877bc3cf8fd46499f70ce1e412c02b.png)
![](https://img.xkw.com/dksih/QBM/2022/11/15/3110366720172032/3167469287415808/STEM/853587aab58c4c61a200edfc811eff32.png?resizew=132)
(1)求抛物线的表达式;
(2)当点E在x轴上运动时,探究以点B,C,D,E为顶点的四边形是平行四边形,并直接写出点E的坐标.
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名校
【推荐2】某校一数学兴趣小组在一次合作探究活动中,将两块大小不同的等腰直角三角形
和等腰直角三角形
,按如图1的方式摆放,
,随后保持
不动,将
绕点C按逆时针方向旋转
(
),连接
,
,延长
交
于点F,连接
.该数学兴趣小组进行如下探究,请你帮忙解答:
时,则
_____;
(2)【初步探究】如图3,当点E,F重合时,请直接写出
,
,
之间的数量关系:_________;
(3)【深入探究】如图4,当点E,F不重合时,(2)中的结论是否仍然成立?若成立,请给出推理过程;若不成立,请说明理由.
(4)【拓展延伸】如图5,在
与
中,
,若
,
(m为常数).保持
不动,将
绕点C按逆时针方向旋转
(
),连接
,
,延长
交
于点F,连接
,如图6.试探究
,
,
之间的数量关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10fc7991ea17d54ff5f4445ac5699463.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a78f1b109b3c6d2390f0afb8e2513d8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/708d48b595c17d4dccf9b4086d7e664e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14dbafa1565aa5fb728b1b6edc1f8a93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9251dff989f7d60db751b73033dee269.png)
(2)【初步探究】如图3,当点E,F重合时,请直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
(3)【深入探究】如图4,当点E,F不重合时,(2)中的结论是否仍然成立?若成立,请给出推理过程;若不成立,请说明理由.
(4)【拓展延伸】如图5,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc75953bf5dcfa4af308c34bf9952d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76bf6a1ddc40eca17f3d5ce18c00bacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1fd7458509752c375bb49bc58278481.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/708d48b595c17d4dccf9b4086d7e664e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
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【推荐1】如图,在矩形
中,
,M、N分别为
的中点,动点P以
的速度从点A出发沿
运动到点D再返回点A;同时动点Q以
的速度从点B出发沿
运动到点C,点P、点Q中有一点停止运动,另一点也同时停止运动、设运动时间为t秒(
).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/9/dddf664f-dc68-4bc8-ab92-89032d83997a.png?resizew=270)
回答下列问题:
(1)当
时,用含t的代数式表示
和
的长;
(2)当t为何值时,直线
恰好平分矩形
的面积?
(3)当t为何值时,以P、Q、M、N为顶点的四边形为平行四边形?直接写出所有满足条件的t值,不必写过程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7cc6ebe3a443327530a2538e4013fc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba48366317ebea1c9dd5e4e67e03092.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c317a2e011d24dba118a3d80f799bd08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42caa702e09eb0f0203f572fb109a79f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebc2d9b900111188aca83126dff97f32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fff6e7e2b9f2b68b1647f6350b98dc8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/9/dddf664f-dc68-4bc8-ab92-89032d83997a.png?resizew=270)
回答下列问题:
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a76c1487cc4eb29c2083c3c90b8ef3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce2790947716b1cfa9c5e7a65db4093.png)
(2)当t为何值时,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(3)当t为何值时,以P、Q、M、N为顶点的四边形为平行四边形?直接写出所有满足条件的t值,不必写过程.
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【推荐2】如图,二次函数
的图象与
轴交于
、
两点,与
轴交于点
,点
的坐标为
,点
的坐标为
.
(1)求该二次函数的表达式;
(2)在抛物线的对称轴上有一点
,在
轴上有一点
,是否存在点
,使以
、
、
、
为顶点的四边形是平行四边形,如果存在请直接写出点
的坐标: .
(3)点
坐标为
,抛物线上是否存在点
,使
,若存在,请求出点
坐标,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f18269e4b2c08f69b719c4c7e7d71733.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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edb13bbc5335efc427f9c619a51dae3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb0e705301752424a492f6277ed7774e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/22/855d18a8-174d-4fa0-a356-bc7cc7b78e4a.png?resizew=224)
(1)求该二次函数的表达式;
(2)在抛物线的对称轴上有一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(3)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ed24bfcc37b79fe9ca61ed8fdf26ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d75c97b4398d02ce3ea333a5d721eac1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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【推荐3】如图,在平面直角坐标系中,已知Rt△AOB的两条直角边OA、OB分别在y轴和x轴上,并且OA、OB的长分别是方程x2-7x+12=0的两根(OA<0B),动点P从点A开始在线段AO上以每秒l个单位长度的速度向点O运动;同时,动点Q从点B开始在线段BA上以每秒2个单位长度的速度向点A运动,设点P、Q运动的时间为t秒.
(1)求A、B两点的坐标.
(2)求当t为何值时,△APQ与△AOB相似,并直接写出此时点Q的坐标.
(3)当t=2时,在坐标平面内,是否存在点M,使以A、P、Q、M为顶点的四边形是平行四边形?若存在,请直接写出M点的坐标;若不存在,请说明理由.
(1)求A、B两点的坐标.
(2)求当t为何值时,△APQ与△AOB相似,并直接写出此时点Q的坐标.
(3)当t=2时,在坐标平面内,是否存在点M,使以A、P、Q、M为顶点的四边形是平行四边形?若存在,请直接写出M点的坐标;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/21/d7b55890-b064-4300-ba3e-1a335e83d0ba.png?resizew=182)
您最近一年使用:0次