如图,矩形
中,
为
边的三等分点,连接
交于点
求![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12de897124aba0887190812d8e387cfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9b288c48c73463a2f214f02b6952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7a6824cd221701c7fe3f8cb4db5d6a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d27546408b3fc40aed7d7d66e35e5561.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12de897124aba0887190812d8e387cfc.png)
![](https://img.xkw.com/dksih/QBM/2020/4/11/2445728797278208/2446311282434048/STEM/ec478422-b151-4f9e-aad4-12a030c1262d.png)
更新时间:2020-04-21 16:15:57
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相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图①,在矩形
中,
动点P从点A出发,以1cm/s的速度沿边
向终点D运动,同时动点Q从点A出发,以2cm/s的速度沿折线
向终点D运动.设点P出发xs时,
的面积为ycm2.已知y与x之间的函数关系如图②所示,其中
为线段,曲线
为抛物线的一部分,请根据图中的信息,解答下列问题:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/25/361e8a54-d8a5-4dc9-92a1-f685ccfe85fe.png?resizew=400)
(1)
,
,
.
(2)分别求出曲线
、线段
所对应的函数解析式.(不要求写出自变量的取值范围)
(3)当x为何值时,
的面积是2cm2?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adc0704fa734170195fbd069e81cc98f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b70f0ab73cb7fd649f7ed35aa5dc1235.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4898591767cc2b2d6436ce215d2db4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa3b438d7ec99f0373f976666a4d4225.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/25/361e8a54-d8a5-4dc9-92a1-f685ccfe85fe.png?resizew=400)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30800bcb030cf5ee97d0e21fbbe8c368.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22d7c214d9685da7be80319ed80d8df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/527736d1f97648cfd189cf086f4d48dc.png)
(2)分别求出曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
(3)当x为何值时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4898591767cc2b2d6436ce215d2db4.png)
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解答题-问答题
|
适中
(0.65)
解题方法
【推荐2】如图,在四边形
中,
,
,
,
,动点P从点A出发,以
的速度向点B运动,同时动点Q从点C出发,以
的速度向点D运动,其中一个动点到达端点时,另一个动点也随之停止运动,设运动时间为t秒.
是平行四边形时,求t的值;
(2)当
________时,四边形
是矩形;若
且点Q的移动速度不变,要使四边形
能够成为正方形,则P点移动速度是________
;
(3)在点P、Q运动过程中,若四边形
能够成为菱形,求
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4795ee1f96b430529934e2231b38885d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a20cd682337dd58f85829c7189b4fbc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d10e4a07f712d2623346621fe2d6b475.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5631e6ec24d3d67bf4592313b6b3f4f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e5acdedbab4bba6a4f5defc72c70b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41d96e428931b19cf639d3e0f26ebe23.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bddc68ed03fe7fd1fe30a5e626ba435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede0bcdce110dbe6f46a4a7ba7e6059d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bddc68ed03fe7fd1fe30a5e626ba435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d1461f3b7f2a8a65097c8de1dcbfc7.png)
(3)在点P、Q运动过程中,若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f42d53a48595e6f0be79d75a12938e89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
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解答题-证明题
|
适中
(0.65)
【推荐1】已知,如图,
O中两条弦AB,CD相交于点E,且AB=CD
(1)求证:
=
;
(2)若
=
,求
的度数.![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45bcd8f6ede8cc2513ad41402f40086.png)
(3)过点B作BH⊥AD于点H,交CD于点G,若AE=2BE,求证:EG=GD
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/091e86ca89e484b331fd90125a5e5af3.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bd6ffb78dad3375efa3b08ab518553d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4598486f8c5ac28b1165b76e78105979.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42bbcda4a4914723f6aeb41f4bd38ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45bcd8f6ede8cc2513ad41402f40086.png)
(3)过点B作BH⊥AD于点H,交CD于点G,若AE=2BE,求证:EG=GD
![](https://img.xkw.com/dksih/QBM/2021/3/6/2671626890280960/2672334650966016/STEM/ab8958ba-eab3-4f5a-9578-ab3097a92ff3.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】【基础巩固】
(1)如图1,在△ABC中,D为AB上一点,AC2=AD•AB.求证:∠ACD=∠B.
【尝试应用】
(2)如图2,在平行四边形ABCD中,E是AB上一点,连结AC,EC.已知AE=4,AC=6,CD=9.求证:2AD=3EC.
【拓展提高】
(3)如图3,四边形ABCD内接于⊙O,AC、BD相交于点E,已知⊙O的半径为2,AE=CE,AB=
AE,BD=
,求△ABD的面积.
![](https://img.xkw.com/dksih/QBM/2022/3/31/2948096961495040/2965996691005440/STEM/8af36137a30e4aefa3938c1f2094c6cf.png?resizew=269)
![](https://img.xkw.com/dksih/QBM/2022/3/31/2948096961495040/2965996691005440/STEM/f6d8891b608d476896d6e493589c788b.png?resizew=454)
(1)如图1,在△ABC中,D为AB上一点,AC2=AD•AB.求证:∠ACD=∠B.
【尝试应用】
(2)如图2,在平行四边形ABCD中,E是AB上一点,连结AC,EC.已知AE=4,AC=6,CD=9.求证:2AD=3EC.
【拓展提高】
(3)如图3,四边形ABCD内接于⊙O,AC、BD相交于点E,已知⊙O的半径为2,AE=CE,AB=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://img.xkw.com/dksih/QBM/2022/3/31/2948096961495040/2965996691005440/STEM/8af36137a30e4aefa3938c1f2094c6cf.png?resizew=269)
![](https://img.xkw.com/dksih/QBM/2022/3/31/2948096961495040/2965996691005440/STEM/f6d8891b608d476896d6e493589c788b.png?resizew=454)
![](https://img.xkw.com/dksih/QBM/2022/3/31/2948096961495040/2965996691005440/STEM/726dee3de9f44be688490140dbc138df.png?resizew=199)
您最近一年使用:0次