如图,
在平面直角坐标系中,AD=6,若
的长是关于x的一元二次方程
的两个根,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/22/e361e5ca-d1d0-4eca-a86e-0a4fa138afdc.png?resizew=174)
(1)由已知可得,
___________,
___________;
(2)若点
为
轴上的点,且
,
点坐标为___________;
(3)上一问中的
与
相似吗?请说明理由;
(4)在直线
上是否存在点
,使以
是以
为腰的等腰三角形?若存在,请直接写出
点的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc840e197de2dabff676ee1b8968fada.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cf272eb7e7966caea1de1a30875bca8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5efc605da97dfeb3eec04edb1826f172.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc45e9cb4d0baa7f47eca8a30a98bc56.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/22/e361e5ca-d1d0-4eca-a86e-0a4fa138afdc.png?resizew=174)
(1)由已知可得,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae27cb335475a14bd4a8d0bf014dc883.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f30d257319132633ca55bdc8823d843.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252053b853152bd294a8315debd00b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ffb694021b52653de5141ae27ba6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cb2ada04088616805dc2153a6bbb9e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252053b853152bd294a8315debd00b92.png)
(3)上一问中的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9372341af8ecc49c059f930179a56f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f35c7d74247c4163e3961ef34a2dba1.png)
(4)在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/655b6a742dbacdab5aaa298007663dd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a84fef45bc6a63a450a8648e6384d00f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/655b6a742dbacdab5aaa298007663dd4.png)
更新时间:2022-10-20 21:40:07
|
相似题推荐
解答题-问答题
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适中
(0.65)
【推荐2】(1)二次函数
的二次项系数是______,常数项是______;
(2)我们已经学习了一元二次方程的三种解法,它们分别是配方法、公式法和因式分解法,请从下列一元二次方程中任选两个,并解这两个方程.
①
;②
;③
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d306c4f725c3625a259ec7c4ac8102cb.png)
(2)我们已经学习了一元二次方程的三种解法,它们分别是配方法、公式法和因式分解法,请从下列一元二次方程中任选两个,并解这两个方程.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d893d9915a25c41a9f402781cdf302ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26dde3175a2480d66a806d39a9baddbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77d8250bc66dfb2de8534739edfcdab6.png)
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解答题-作图题
|
适中
(0.65)
【推荐1】如图,
在平面直角坐标系内,顶点的坐标分别为
,
、
.
![](https://img.xkw.com/dksih/QBM/2019/9/19/2293967128510464/2294280072470528/STEM/1dea4ad2d6da42fb8d2a935a36f1325d.png?resizew=232)
(1)平移
,使点
移到点
,画出平移后的
,并写出点
的坐标.
(2)将
绕点
旋转
,得到
,画出旋转后的
,并写出点
的坐标.
(3)求(2)中的点
旋转到点
时,点
经过的路径长(结果保留
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1f8984a42bcc4d9fe2283139653c3e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/592a85017ea7dbcc771a1856d5724bdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f2b2e17012dad782bd12795cd27488.png)
![](https://img.xkw.com/dksih/QBM/2019/9/19/2293967128510464/2294280072470528/STEM/1dea4ad2d6da42fb8d2a935a36f1325d.png?resizew=232)
(1)平移
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8b35ce51792c7a300d4a8b30145b26b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c3135fa20c32d04a270750f77c1f2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
(2)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb0e705301752424a492f6277ed7774e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11055aa667dd8cd4a02b04778fca9125.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/403590d719951bd6133479f4e52041bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/403590d719951bd6133479f4e52041bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
(3)求(2)中的点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
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解答题-证明题
|
适中
(0.65)
【推荐2】如图1,已知
是
的角平分线,可证
.证明思路是如图2,过点
作
,交
的延长线于点
,构造相似三角形来证明
.
(1)利用图2证明
;
(2)如图3,在
中,
,
是边
上一点.连接
,将
沿
所在直线折叠,点
恰好落在边
上的
点处.若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a02bad7fac070822f4c8b4f8b64bda72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28971fe3e3f9d3849400e98b46fc3ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a02bad7fac070822f4c8b4f8b64bda72.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/6/b6d4f751-15c4-4190-ab84-3fbf71118c30.png?resizew=465)
(1)利用图2证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a02bad7fac070822f4c8b4f8b64bda72.png)
(2)如图3,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca036d049f5205cf04cb1b9c5cd03f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.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,抛物线
与x轴交于A、B两点,与y轴交于点C,直线
过B、C两点,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/7/74af511b-d142-4ce5-a150-d6b0e12ed5b9.png?resizew=200)
(1)求抛物线的解析式;
(2)求证:
;
(3)抛物线对称轴上是否存在点P使得
的最小值,若存在,求出点P坐标,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0c9800e4b992044d16681e77ff6563c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc9118cc77fc0a045337745890e50cad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/7/74af511b-d142-4ce5-a150-d6b0e12ed5b9.png?resizew=200)
(1)求抛物线的解析式;
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/767bcca107034191460cd6fe3f17e7bf.png)
(3)抛物线对称轴上是否存在点P使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1441093334b71f88954eed46804c316c.png)
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解答题-作图题
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适中
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【推荐2】尺规作图:如图所示,ΔABC 中∠A=36°,AB=AC,请用尺规过点B作一条直线,使其将ΔABC分成两个小三角形,且其中一个小三角形与ΔABC相似.
![](https://img.xkw.com/dksih/QBM/2019/11/18/2336612627398656/2336665222823936/STEM/4c1443c8f3844bfc9a2fcb3e12e23c15.png?resizew=147)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】已知等腰三角形的周长为
,设它的底边长为
,腰长为
,腰长y
是底边长x
的函数.求此函数的表达式,并写出自变量的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c2c458557c1fdd6bdfd0d6cc058987b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee3160fce05b551569b8c7b5de6dd8b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc933c59790e1e90837c1ffe02f449f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d463bb27cb607a91c73b5610c0a5d2c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d463bb27cb607a91c73b5610c0a5d2c7.png)
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解答题-问答题
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【推荐2】(1)已知等腰
的周长是
,且腰长比底边长的2倍少4,求等腰
的三边的长;
(2)已知
,
,
是
的三个内角,且
,
,求
三个内角的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/814397354c2ae1cb08e0271305970811.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db39416d0786bd5c4535aaac2dbca60c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a82007803c6a05a004cfc6aef69a1654.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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