如图,在
中,
,
、
的长为方程
的两根,且
.
(1)求
的值.
(2)动点
从点
出发,以每秒5个单位的速度,沿
的路线向点B运动;动点
从点
出发,以每秒3个单位的速度,沿
的路线向点
运动,若点
、
同时出发,当其中有一点到达终点时整个运动随之结束.设运动时间为
秒.
①在整个运动过程中,设
的面积为
,试求
与
之间的函数关系式;
②是否存在这样的
,使得
的面积为3?若存在,请求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e83a0c9561ef92dfa84e027529e0d3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e95be88bc79b3c7e72d349c4cb3c88d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/23/10f3834c-75ac-4992-a24d-936f63b43a6d.png?resizew=153)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)动点
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.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/764509115979e9958101808383672ec0.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
①在整个运动过程中,设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba70863115b0947e98214a7b2512167d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
②是否存在这样的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba70863115b0947e98214a7b2512167d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
更新时间:2023-12-10 18:55:50
|
相似题推荐
解答题-问答题
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适中
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名校
【推荐1】已知:关于x的一元二次方程x2﹣2(m﹣1)x+m2=0有实数根.
(1)求m的取值范围;
(2)设方程的两个实数根为x1,x2,且x12+x22=14,求m的值.
(1)求m的取值范围;
(2)设方程的两个实数根为x1,x2,且x12+x22=14,求m的值.
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【推荐2】用合适的方法解一元二次方程:
(1)
;
(2)
;
(3)
;
(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b04226b39df2f67ba1c8f0bef304d8e.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8034dddd265a186e29172623e3b9eadf.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0481a2aa2a0139d4ba2717b158c0bed5.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c3faadfebc4b82b40bc71792583530a.png)
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解答题-应用题
|
适中
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名校
【推荐1】某商场销售某种商品的进价为70元/件,当售价为150元/件时,每周可以售出200件,每件售价每上涨5元,则每周会少售出10件,若设每周销售利润为w元,每件商品的售价为x元/件:
(1)求w与x之间的函数关系式;
(2)该商场响应“学习雷锋精神”的号召,决定每售出一件该款商品捐款30元,若该款商品的售价不超过180元/价,请问商场捐款之后能否保证每周销售利润随售价增加而增加?并说明理由.
(1)求w与x之间的函数关系式;
(2)该商场响应“学习雷锋精神”的号召,决定每售出一件该款商品捐款30元,若该款商品的售价不超过180元/价,请问商场捐款之后能否保证每周销售利润随售价增加而增加?并说明理由.
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【推荐2】某商品的进价为每件20元,售价为每件30元,每个月可卖出180件.如果每件商品的售价每上涨1元,则每个月就会少卖出10件,但每件售价不能高于35元,设每件商品的售价上在x元(x为整数),每个月的销售利润为y元。
(1)求y与x的函数关系式,并直接写出自变量x的取值范围;
(2)当x为何值时y的值为1920?
(3)每件商品的售价为多少元时,每个月可获得最大利润?最大利润是多少?
(1)求y与x的函数关系式,并直接写出自变量x的取值范围;
(2)当x为何值时y的值为1920?
(3)每件商品的售价为多少元时,每个月可获得最大利润?最大利润是多少?
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解答题-作图题
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适中
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【推荐3】如图(图1),点P是线段
上与点
,点
不重合的任意一点,分别以
,
,
为顶点作
,其中
与
的一边分别是射线
和射线
,
的两边不在直线
上,我们规定这三个角互为等联角,点
为等联点,线段
为等联线.
(1)请直接写出(图
)中
与
的形状关系 ;
方格的纸上,小正方形的顶点为格点,
,
在格点上
请用两种不同连接格点的方法,作出以线段
为等联线、某格点
为等联点的等联角,并标出等联角,保留作图痕迹:
中,
,
,点
是射线
上的一个动点,将三角板的直角顶点重合于点
,三角板两直角中的一边始终经过点
,另一直角边交射线
于点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7186b756542b54106635d9256528aa91.png)
,
,求
与
的函数关系式,并写出自变量的取值范围;
②是否存在这样的点
,使
周长等于
周长的
倍?若存在,请求出
的长度;若不在,请简要说明理由![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aa2da622fcdc28ee85c08c5b0a4e3af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4843207711bdb336b71f81c09258717c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9917ac3426d3ac941bf789687914da4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41ff8c8d239cc12ddc3a899e9f054aa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/651765d16c8f6415d7dc63ff6f0da6fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
(1)请直接写出(图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b044e1fc58f1da29ddf2fa8413aa5f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f8b1307079384bf7accebda3c826ef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.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/c90282d4a37c9a20620d4bbb0c263cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267ace52b64e1e7dfc5211e033255b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f96461af9193d5d7867ddf8fcbefcaec.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/41ff8c8d239cc12ddc3a899e9f054aa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7186b756542b54106635d9256528aa91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a6c4c6634ae6d9918828c595743d130.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)
②是否存在这样的点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ecd6a4d9dbcc920542e43b03a71057.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9017cfed5393f9b21602107ed164c733.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365822bd3945e6a3e871ca979c84cc12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,四边形
是正方形,点
、
分别是
、
上的点,且
,连接
、
交于点
.
(1)如图①,判断
和
之间的数量关系和位置关系,并证明;
(2)如图②,连接
,点
是
中点,若
,
,求线段
的长度;
(3)如图③,作
于点
,若
,求证:点
是
中点.
![](https://img.xkw.com/dksih/QBM/2020/6/13/2484009264676864/2490652340887552/STEM/7b82262e0eec48c6bf5ff695e4f9be20.png?resizew=151)
![](https://img.xkw.com/dksih/QBM/2020/6/13/2484009264676864/2490652340887552/STEM/5e26565b9c31429eb309ea3e0a12227a.png?resizew=145)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f805768a5ffaf8bdfa4bc3b680aafdc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(1)如图①,判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
(2)如图②,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60634341a9603e24b2bbc6960abe3d31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a0268d04b9dea7629af27af9a0285a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
(3)如图③,作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be35857e65ce2b0ad7b792311469e234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf23208560273d848cc4f6316990141c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2020/6/13/2484009264676864/2490652340887552/STEM/7b82262e0eec48c6bf5ff695e4f9be20.png?resizew=151)
![](https://img.xkw.com/dksih/QBM/2020/6/13/2484009264676864/2490652340887552/STEM/5e26565b9c31429eb309ea3e0a12227a.png?resizew=145)
![](https://img.xkw.com/dksih/QBM/2020/6/13/2484009264676864/2490652340887552/STEM/81e13a70f5ac4296a47b30292c3de516.png?resizew=143)
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解答题-问答题
|
适中
(0.65)
【推荐2】如图,一次函数
的图象与反比例函数
的图象于
两点.
(1)求反比例函数与一次函数的关系式;
(2)在
轴上是否存在一点
,平面坐标系内是否存在一点
,使以
、
、
、
为顶点的四边形为矩形?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/0e114459637a3db306e91b5e9ee9aae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4243143a9b7630ed2001c0ac807de78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba6097fe5e5da621873e950cf5646ca1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/7/f0992642-320e-4762-a68d-2b7bf9f45f8b.png?resizew=212)
(1)求反比例函数与一次函数的关系式;
(2)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/acc290b44635265137fdf13146b6a6d9.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】如图,已知等腰直角三角形
的直角边长与正方形
的边长均为
厘米,
与
在同一直线上,开始时点
与点
重合,让
以每秒
厘米的速度向左运动,最终点
与点
重合.
(1)当运动时间为
秒时,重叠部分的面积
______厘米
;
(2)求重叠部分的面积
(厘米
)与时间
(秒)之间的函数关系式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/389bc3f29c058067e06e0d0d2be399da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b7f27ebcef70a3ebbbe8d2e53ea0896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/6/621dd0c8-a689-418c-bcd7-b841a46ccf04.jpg?resizew=124)
(1)当运动时间为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/921ef5abce73648e3834140df9a72aa8.png)
(2)求重叠部分的面积
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/921ef5abce73648e3834140df9a72aa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,在中,
,过点
作
,垂足为
.
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34db5860990e51ba31edc8cdd077c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4494a85de0be0b97a69348115aef8513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edc5df62e8ac9c74a46462519b95479a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7574ca73f798ab8f1f2c72e855ba913.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/348fb71fbc47fd87e9ce011652ef4186.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86338536656046e93b53672ade9a78b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
您最近一年使用:0次