如图,在正方形
中,
,点P、Q分别是
、
边上的动点.
![](https://img.xkw.com/dksih/QBM/2023/1/4/3145407257403392/3147068908929024/STEM/773b3f54307e42a3b87884a1123843ea.png?resizew=174)
![](https://img.xkw.com/dksih/QBM/2023/1/4/3145407257403392/3147068908929024/STEM/5d83bf2244594eb8b7e35ba73ebfa50b.png?resizew=173)
(1)填空:
_________;
(2)若
,且点A关于
的对称点
落在
边上,求
的值;
(3)设
,直线
交直线
于点
,求
与
面积之和
的最小值.(用含a的代数式表示)
![](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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/2023/1/4/3145407257403392/3147068908929024/STEM/773b3f54307e42a3b87884a1123843ea.png?resizew=174)
![](https://img.xkw.com/dksih/QBM/2023/1/4/3145407257403392/3147068908929024/STEM/5d83bf2244594eb8b7e35ba73ebfa50b.png?resizew=173)
(1)填空:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae248960d8c1677cf948f8251275e863.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8707ab6dd4e67b48f264f71bba7c507.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b7822bd5f036c0ea6802ca7f62e2d9e.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a93b9e58955cd81f6d2444a284c58be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9763846b1131e1e3e2d741ad95d5bb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ed8572d4c24350d8de87f814ba2b9ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
更新时间:2023-01-06 17:50:59
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相似题推荐
解答题-问答题
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较难
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【推荐1】如图,已知抛物线
:
与直线
的一个交点记为A,点A的横坐标是3.将抛物线
:
向左平移3个单位,再向下平移3个单位,得到抛物线
,直线
与
的一个交点记为B,点C是线段AB上的一个动点,过点C作x轴的垂线,垂足为D,在CD的右侧作正方形CDEF.
![](https://img.xkw.com/dksih/QBM/2020/2/10/2396213559123968/2396571964178432/STEM/7198382b135643269d931c02a1e76c38.png?resizew=141)
(1)求抛物线
的表达式及顶点坐标;
(2)当点C的横坐标为2时,直线
恰好经过正方形CDEF的顶点F,求此时n的值;
(3)在点C的运动过程中,若直线
与正方形CDEF始终没有公共点,求n的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b104090ea2ac34be58a76a4e0e95cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/575ffdd985a9969e6de10aeac3c18bfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b104090ea2ac34be58a76a4e0e95cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/575ffdd985a9969e6de10aeac3c18bfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df1d9b712b639c8b6809c9f3ae03706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df1d9b712b639c8b6809c9f3ae03706.png)
![](https://img.xkw.com/dksih/QBM/2020/2/10/2396213559123968/2396571964178432/STEM/7198382b135643269d931c02a1e76c38.png?resizew=141)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b104090ea2ac34be58a76a4e0e95cb3.png)
(2)当点C的横坐标为2时,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd5848d7371b15965ab8990329fe04bd.png)
(3)在点C的运动过程中,若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd5848d7371b15965ab8990329fe04bd.png)
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解答题-作图题
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【推荐2】已知两个连体的正方形(有两条边在同一条直线上)在正方形网格上的位置如图所示,请你把它分割后,拼接成一个新的正方形. (要求:在正方形网格图中用实线画出拼接成的新正方形且新正方形的顶点在网格的格点上,不写作法).
![](https://img.xkw.com/dksih/QBM/2015/3/20/1573814762790912/1573814769238016/STEM/abbcc899-4fe3-4b8a-8ed9-741a834a9cf5.png?resizew=201)
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【推荐1】已知:如图,一次函数
的图象分别与x轴、y轴相交于点A、B,且与经过点
的一次函数
的图象相交于点D.点D的横坐标为4,直线
与
轴相交于点E.
(1)直线
的函数表达式为:__________;(直接写出结果)
(2)点Q为线段
上的一个动点,连接
.
①若直线
将
的面积分为
两部分,试求点Q的坐标;
②点Q是否存在某个位置,将
沿着直线
翻折,使得点D恰好落在直线
下方的坐标轴上?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/71c682405d9bcca65e257ac37ba07d6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5eae074b97ec3ff58fbd9d556aea81f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/16/3b334a0a-0d9e-4a4c-a2f9-69b39f6971f5.png?resizew=284)
(1)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(2)点Q为线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
①若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15514bc735fe4b744672edefe00009c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37d65e051e943ab28fa57aee2fb57994.png)
②点Q是否存在某个位置,将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15514bc735fe4b744672edefe00009c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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解题方法
【推荐2】阅读理解题:
定义:如果一个数的平方等于﹣1,记为i2=﹣1,这个数i叫做虚数单位,把形如a+bi(a,b为实数)的数叫做复数,其中a叫这个复数的实部,b叫做这个复数的虚部,它的加、减、乘、除运算与代数式的运算类似.
例如:计算:(2﹣i)+(5+3i)=(2+5)+(﹣1+3)i=7+2i;
(1+i)×(2﹣i)=1×2﹣i+2×i﹣i2=2+(﹣1+2)i+1=3+i;
根据以上信息,完成下列问题:
(1)填空:i3= ,i4= ,i+i2+i3+…+i2021= ;
(2)计算:(1+i)×(3﹣4i)﹣(﹣2+3i)(﹣2﹣3i);
(3)已知a+bi=
(a,b为实数),求
的最小值.
定义:如果一个数的平方等于﹣1,记为i2=﹣1,这个数i叫做虚数单位,把形如a+bi(a,b为实数)的数叫做复数,其中a叫这个复数的实部,b叫做这个复数的虚部,它的加、减、乘、除运算与代数式的运算类似.
例如:计算:(2﹣i)+(5+3i)=(2+5)+(﹣1+3)i=7+2i;
(1+i)×(2﹣i)=1×2﹣i+2×i﹣i2=2+(﹣1+2)i+1=3+i;
根据以上信息,完成下列问题:
(1)填空:i3= ,i4= ,i+i2+i3+…+i2021= ;
(2)计算:(1+i)×(3﹣4i)﹣(﹣2+3i)(﹣2﹣3i);
(3)已知a+bi=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/563cafd3be47b56aafde7aec46284a0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24b7550efe53709bca2e1def1f023f43.png)
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【推荐1】如图,四边形ABCD为菱形,以AD为直径作⊙O,请在下面的图中按要求仅用无刻度的直尺作图.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/3/0f067871-c2fc-4b7f-88b8-79795174f70c.png?resizew=370)
(1)如图①,当∠ADC=60°时,⊙O与DC相交于点M,过点M作⊙O的切线;
(2)如图②,当∠ADC=90°时,过点C作⊙O的切线(CD除外).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/3/0f067871-c2fc-4b7f-88b8-79795174f70c.png?resizew=370)
(1)如图①,当∠ADC=60°时,⊙O与DC相交于点M,过点M作⊙O的切线;
(2)如图②,当∠ADC=90°时,过点C作⊙O的切线(CD除外).
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解答题-证明题
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【推荐2】如图,点M,N分别在矩形
的边
和
(或延长线)上,连接
,
,若
.
(1)求证:
是等腰三角形;
(2)当M为
中点时,
交
于点
,若
,
,求
的长;
(3)当M为
上任意一点,探究
,
,
间的数量关系,并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/b66a5b7813e902306477f91f9f4084cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a73e07a59c33936e1282b3221c2002a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/23/9a52dd86-d3ef-4f59-ba94-1940cc59cf46.jpg?resizew=157)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98013a5042685a1db94249e70c62c09a.png)
(2)当M为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce6c0e9de83f2e64ae33609fc08459d.png)
(3)当M为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66a5b7813e902306477f91f9f4084cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
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【推荐1】在平面直角坐标系中,抛物线
经过原点,点
,点
在这条抛物线上.
(1)求该抛物线的解析式;
(2)如图1所示,若直线
与抛物线
交于点
和
,连接
和
,求
的正切值;
(3)如图2所示,已知点
,
,抛物线
向左或向右平移后,点
,
的对应点分别为
,
,当四边形
的周长最小时,请直接写出平移后抛物线的顶点坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d549fd5b1e6da722932fe43675d5ff18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f44ad5fad07b9ea2cc2218c23b36826.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/9/cb5008d3-db35-4990-a65a-8f66438382b3.png?resizew=419)
(1)求该抛物线的解析式;
(2)如图1所示,若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/501a6d50c937729c8d0f02b2b62a0ee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.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/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e98e38cebc8600ba35288258fdfe462a.png)
(3)如图2所示,已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8748dc55e2f45bc37fc4d84d7310f79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ef03f452410ab19c6246567c427178.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.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/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b3bd5e6bc2a0a277d279bb01af9584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63482ea2290c3a8264c8ba37424e0f9a.png)
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【推荐2】如图,抛物线y=x2+bx+c交x轴于A(﹣
,0)、B两点,交y轴于点C(0,﹣3),点D是线段BC下方的抛物线上一个动点,过点D作DE⊥x轴于点E,交线段BC于点F.
(1)求抛物线的表达式;
(2)求△BCD面积的最大值,并写出此时点D的坐标.
(3)是否存在点D,使得△CDF与△BEF相似,若存在,求出点D的坐标,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2a698891d42c70b597f0da4f215f09.png)
(1)求抛物线的表达式;
(2)求△BCD面积的最大值,并写出此时点D的坐标.
(3)是否存在点D,使得△CDF与△BEF相似,若存在,求出点D的坐标,若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/2020/11/6/2586873266618368/2590627702398976/STEM/7d0dfdd499d94cd4bdb746b24fd0e1b7.png?resizew=182)
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