如图,已知
中,
,
,点
、
分别是
、
的中点,点
从点
出发,沿折线
,运动,到点
后停止.连接
,设点
运动的路程为
,
的面积为
,请解答下列问题:
(2)根据函数表达式,在坐标系中画出函数图象,并写一条该函数的性质: ;
(3)请结合图象直接写出当
时,x的取值范围是 (保留一位小数,误差不超过0.2).
![](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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14b51c137ebe3bfb57a47704e8772de1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.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/357265c532428e886a643e8e653eec9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(2)根据函数表达式,在坐标系中画出函数图象,并写一条该函数的性质: ;
(3)请结合图象直接写出当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ac634339d8315bd201d6d9fb52684d.png)
2023·重庆铜梁·模拟预测 查看更多[2]
更新时间:2024-03-24 20:51:43
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相似题推荐
解答题-问答题
|
较难
(0.4)
【推荐1】如图(1),已知抛物线经过坐标原点O和x轴上另一点E,顶点M的坐标为(2,4);矩形ABCD的顶点A与点O重合,AD、AB分别在x轴、y轴上,且AD=2,AB=3.
(1)求直线y=3与抛物线交点的坐标;
(2)将矩形ABCD以每秒1个单位长度的速度从图⑴所示的位置沿x轴的正方向匀速平行移动,同时一动点P也以相同的速度从点A出发向B匀速移动,设它们运动的时间为t秒(0≤t≤3),直线AB与该抛物线的交点为N(如图(2)所示).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/3/3b306053-9484-43b5-a63a-8aa6941fcd6d.png?resizew=420)
①当
时,判断点P是否在直线ME上,并说明理由;
②设以P、N、C、D为顶点的多边形面积为S,试问S是否存在最大值?若存在,求出这个最大值;若不存在,请说明理由.
(1)求直线y=3与抛物线交点的坐标;
(2)将矩形ABCD以每秒1个单位长度的速度从图⑴所示的位置沿x轴的正方向匀速平行移动,同时一动点P也以相同的速度从点A出发向B匀速移动,设它们运动的时间为t秒(0≤t≤3),直线AB与该抛物线的交点为N(如图(2)所示).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/3/3b306053-9484-43b5-a63a-8aa6941fcd6d.png?resizew=420)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38b986da923cb8e3eb9cc37b42fb84b8.png)
②设以P、N、C、D为顶点的多边形面积为S,试问S是否存在最大值?若存在,求出这个最大值;若不存在,请说明理由.
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【推荐2】如图,在平面直角坐标系中,矩形
的边
与x轴重合,
与y轴重合,
,D是
上一点,且
,
的长是一元二次方程
的两个根(
)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/2/5ec86151-0f8c-49ab-88b4-15a085fa81a5.png?resizew=536)
(1)求线段
,
,
的长;
(2)在线段
上有一动点P(不与A、B重合),点P从点A出发,以每秒1个单位长度的速度沿
方向匀速运动,到终点B停止,设运动的时间为t秒,过P点作
交
于E,
交
于F,求四边形
的面积S与时间t的函数关系式;
(3)在(2)的条件下,在点P运动的过程中,x轴上是否存在点Q,使以A、D、P、Q为顶点的四边形是菱形?若存在,请直接写出点Q的坐标,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/607543bb9f55b8a141ed2d6cf0e1a20b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b288fa2a42caa62618463f2630af66f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee0608ed4a0accdcb7b3eb8aac383af3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/2/5ec86151-0f8c-49ab-88b4-15a085fa81a5.png?resizew=536)
(1)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbd7e0e172290aa753c445fe4becf1a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb6440ebdf0e0b9b4d18c54aa817622.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/213a169e7fd26fcd32fb159bee2a3f91.png)
(3)在(2)的条件下,在点P运动的过程中,x轴上是否存在点Q,使以A、D、P、Q为顶点的四边形是菱形?若存在,请直接写出点Q的坐标,若不存在,请说明理由.
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解答题-证明题
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【推荐1】如图,已知一次函数y=﹣
x+b的图象过点A(0,3),点P是该直线上的一个动点,过点P分别作PM垂直x轴于点M,PN垂直y轴于点N,在四边形OMPN的边上分别截取:OB=
OM,MC=
MP,OE=
ON,ND=
NP.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/20/129a3ea3-ba41-49c0-a593-75537aaae4fe.png?resizew=220)
(1)求b的值;
(2)求证:四边形BCDE是平行四边形;
(3)在直线y=﹣
x+b上是否存在这样的点P,使四边形BCDE为正方形?若存在,请求出所有符合的点P的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/20/129a3ea3-ba41-49c0-a593-75537aaae4fe.png?resizew=220)
(1)求b的值;
(2)求证:四边形BCDE是平行四边形;
(3)在直线y=﹣
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
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较难
(0.4)
【推荐2】如图,在平面直角坐标系中,直线
的解析式为:
,分别交x,y轴于点A,B,直线
分别交x,y轴于点C,B,
,且
.
(1)求直线
的解析式;
(2)将点B沿某条直线折叠使点B与点O重合,折痕分别交
于点E,D,在x轴上是否存在点F,使点D,E,F为顶点的三角形是以
为斜边的直角三角形,若存在,请求出F点坐标;若不存在,请说明理由;
(3)在平面直角坐标系内是否存在一个点,使得这个点与E,D,O三点构成的四边形是平行四边形?若存在,请直接写出这个点的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a4b37d07823bdaa6116780e01506afc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392b9e1a179a6676362679354a9e7e51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/19/c8df0c3b-4707-4b35-a994-1835254f39e4.png?resizew=470)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)将点B沿某条直线折叠使点B与点O重合,折痕分别交
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/674c703e1fee31e92f13ff1923917759.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
(3)在平面直角坐标系内是否存在一个点,使得这个点与E,D,O三点构成的四边形是平行四边形?若存在,请直接写出这个点的坐标;若不存在,请说明理由.
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解答题-证明题
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较难
(0.4)
【推荐1】如图,在矩形
中,
,
,
是射线
上的一个动点,作
,交射线
于点
,交射线
于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/2/fb41e3c0-4f33-4462-9822-4424d22bce23.png?resizew=316)
(1)如图,当点
在边
上时(点
与点
、
不重合),延长
交
延长线于
.
①当
平分
时,求
的长;
②设
,
,求
关于
的函数关系式,并写出自变量的取值范围;
(2)当点
在射线
上时(点
与点
、
不重合),射线
交射线
于点
,当
时,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7788830ed1cb3b9c5988f70f43595f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a2eb8bf9153c29d9fa649b6ef04467e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/2/fb41e3c0-4f33-4462-9822-4424d22bce23.png?resizew=316)
(1)如图,当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40ec709a974b61f0f0a2565d4efe0f58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
②设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a666403569e607f32af5f762c246dc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e641b2f51bc2b8a4dbe7db7ce5ab9b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c3245c0038f9dee2ec017d9fd2518f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
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较难
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真题
【推荐2】如图,在⊙O中,AB为直径,OC⊥AB,弦CD与OB交于点F,在AB的延长线上有点E,且EF=ED.
![](https://img.xkw.com/dksih/QBM/2015/7/21/1573880748752896/1573880755118080/STEM/f1c34d7cfe424a1ab4d23b7d3d700e2f.png)
(1)求证:DE是⊙O的切线;
(2)若OF:OB=1:3,⊙O的半径R=3,求
的值.
![](https://img.xkw.com/dksih/QBM/2015/7/21/1573880748752896/1573880755118080/STEM/f1c34d7cfe424a1ab4d23b7d3d700e2f.png)
(1)求证:DE是⊙O的切线;
(2)若OF:OB=1:3,⊙O的半径R=3,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea9ca97c8cd8eac7f583630a9b0f38fe.png)
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