如图,在平面直角坐标系中,点O为坐标原点,在四边形OABC中,点A在y轴上,AB∥OC,点B的坐标为(6,6),点C的坐标为(9,0).
(1)求直线BC的解析式;
(2)现有一动点P从点A出发,以每秒1个单位的速度沿射线AB运动(点P不与点B重合),过P作PH⊥x轴,垂足为H,直线HP交直线BC于点Q,设PQ的长度为d,点P的运动时间为t秒,求d与t之间的函数关系式,并直接写出相应的自变量t的取值范围;
(3)在(2)问的条件下,在y轴和直线BC上分别找一点M和N,当四边形PQMN为菱形时,求点M的坐标.
![](https://img.xkw.com/dksih/QBM/2016/9/26/1574242927853568/1574242934505472/STEM/29f488f40fe44017b4261d7d145f3a5a.png)
![](https://img.xkw.com/dksih/QBM/2016/9/26/1574242927853568/1574242934505472/STEM/29f488f40fe44017b4261d7d145f3a5a.png)
![](https://img.xkw.com/dksih/QBM/2016/9/26/1574242927853568/1574242934505472/STEM/29f488f40fe44017b4261d7d145f3a5a.png)
(1)求直线BC的解析式;
(2)现有一动点P从点A出发,以每秒1个单位的速度沿射线AB运动(点P不与点B重合),过P作PH⊥x轴,垂足为H,直线HP交直线BC于点Q,设PQ的长度为d,点P的运动时间为t秒,求d与t之间的函数关系式,并直接写出相应的自变量t的取值范围;
(3)在(2)问的条件下,在y轴和直线BC上分别找一点M和N,当四边形PQMN为菱形时,求点M的坐标.
![](https://img.xkw.com/dksih/QBM/2016/9/26/1574242927853568/1574242934505472/STEM/29f488f40fe44017b4261d7d145f3a5a.png)
![](https://img.xkw.com/dksih/QBM/2016/9/26/1574242927853568/1574242934505472/STEM/29f488f40fe44017b4261d7d145f3a5a.png)
![](https://img.xkw.com/dksih/QBM/2016/9/26/1574242927853568/1574242934505472/STEM/29f488f40fe44017b4261d7d145f3a5a.png)
![](https://img.xkw.com/dksih/QBM/2016/9/26/1574242927853568/1574242934505472/STEM/29f488f40fe44017b4261d7d145f3a5a.png)
更新时间:2016-12-06 13:48:21
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图,在平面直角坐标系中,点
为坐标原点,点
与点
关于
轴对称,点
为
轴的正半轴上一动点.以
为边作等腰直角三角形
,
,点
在第一象限内.连接
,交
轴于点
.
![](https://img.xkw.com/dksih/QBM/2019/5/27/2212699882602496/2212766698381312/STEM/b36b461bf62043968f113c6833b40536.png?resizew=421)
(Ⅰ)用含
的式子表示点
的坐标;
(Ⅱ)在点
运动的过程中,判断
的长是否发生变化?若不变求出其值,若变化请说明理由;
(Ⅲ)过点
作
,垂足为点
,请直接写出
与
之间的数量关系式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c84818cfbd9a885081cb4e3294eabe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c5b904a814c6cabc75450e899cf247e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3d69c69c46ac34f560546c22af120be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/2019/5/27/2212699882602496/2212766698381312/STEM/b36b461bf62043968f113c6833b40536.png?resizew=421)
(Ⅰ)用含
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(Ⅱ)在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
(Ⅲ)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb25434985431dcc5c33fcbb3354b786.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c5fd26c79b37f39431b9f63cf9c3bc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
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解答题-问答题
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【推荐2】如图,在平面直角坐标系中,直线
与x轴、y轴分别交于点A、B,点P也在直线
上,已知点
.
![](https://img.xkw.com/dksih/QBM/2022/5/16/2980655925919744/2982739471515648/STEM/17af81b0-5bed-477e-8856-755394fc3771.png?resizew=142)
(1)求
的长;
(2)若
的面积与
的面积相等,求点P的坐标;
(3)设直线
与直线
交点的横坐标为m,若
,直接 写出b的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b5062be5cf27ae8089ad0c25d1b7c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b5062be5cf27ae8089ad0c25d1b7c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9d6e498b0c1d1cedb86fe548f9fe79a.png)
![](https://img.xkw.com/dksih/QBM/2022/5/16/2980655925919744/2982739471515648/STEM/17af81b0-5bed-477e-8856-755394fc3771.png?resizew=142)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c025ee3317be1099b7bf03a11e37ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e534b545e86c02abd2a0dc75d32b407.png)
(3)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b5062be5cf27ae8089ad0c25d1b7c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fc52c7cc2a922ea3cbc5ef94d57240c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71fd6d2b4851ea0e1c517c7d97942bc2.png)
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解答题-应用题
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适中
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【推荐1】如图,在葫芦河的右岸边有一高楼
,左岸边有一坡度
的山坡
,点C与点B在同一水平面上,
与
在同一平面内.某数学兴趣小组为了测量楼
的高度,在坡底C处测得楼顶A的仰角为
,然后沿坡面
上行了
米到达点D处,此时在D处测得楼顶A的仰角为
.
的值.
(2)求楼
的高度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb929846943acd421c529d7868bb4969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8120f2eeb724c756b5f84a14c6df527.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8120f2eeb724c756b5f84a14c6df527.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b342d5cb6dd1c84a82f6aca68ed829c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8120f2eeb724c756b5f84a14c6df527.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1be5c7412a7d5e286508b8c8dac21a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c030b25575d683af91c06e6a3e4f463.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
(2)求楼
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
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解答题-问答题
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适中
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【推荐2】如图,
是
的直径,
是半圆
上的一点,
平分
,垂足为
,
交
于
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/15/02c1eae8-447a-4f30-a82c-e8b2215fc389.png?resizew=153)
(1)求出:
是
的切线;
(2)若
,求
的长;
(3)若
是弧
的中点,
的半径为
,求图中阴影部分的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22d0ec16f037b337a8e8e1d2b9b3180a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b41d4070854edfaa24071137b314cb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/15/02c1eae8-447a-4f30-a82c-e8b2215fc389.png?resizew=153)
(1)求出:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cdd9f345915ae742ed3dcd3f9678264.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a397c792ee68f27f19e70a4379486ed7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
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解答题-作图题
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适中
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【推荐3】【探究】在“动点与函数”的活动课上,老师提出了如下问题:如图1,在矩形
中,
,
,连接
,动点
从点
出发以每秒1个单位长度的速度沿
方向运动,当点
运动到点
时停止运动.设运动时间
秒,
的面积为
,请直接写出
关于
的函数表达式以及自变量
的取值范围.
的性质(写出一条即可).
【应用】进一步思考:结合函数图象,写出
的面积为4时
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e673ef2d48215ca84a48377f17d6df00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d0984bb4715e5e6100153012ddc5c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
【应用】进一步思考:结合函数图象,写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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解答题-证明题
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适中
(0.65)
【推荐1】如图,菱形
边长为4,
,点E为
延长线上一点,将
绕点A逆时针旋转
得到线段
,且
恰好过点C,其中
.
(1)若
时,求
;
(2)求证:
;
(3)若
,求k.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32436704a722d5e568ff5c175bf3c662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12b01228e6279390b990bb2f9808475e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/26/e6627d7e-c222-415b-b9b2-d92d0357762a.png?resizew=409)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e4ba6ddba076045f5d95a51684b93e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a869fe0e97eb68aea3f3d0c24d4fc6e.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7634e27d26e2e585762cbf5f43fdf40.png)
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解答题-作图题
|
适中
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【推荐2】如图,已知
中,
,请用直尺(不带刻度)和圆规,按下列要求作图(不要求写作法,但要保留作图痕迹).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/22/ea93fa35-2aaa-454f-b4cc-375ea50340fa.png?resizew=348)
(1)在图1中,求作点D,使四边形
为平行四边形;
(2)在图2中,求作菱形
,使菱形的顶点D落在
边上;
(3)在(2)的条件下,若
,则菱形
周长为_______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/22/ea93fa35-2aaa-454f-b4cc-375ea50340fa.png?resizew=348)
(1)在图1中,求作点D,使四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)在图2中,求作菱形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bc1cbcd6d00f0c36bad8254297d9f33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(3)在(2)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d0f3d63fbecff1cbeaa844ee35dee6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bc1cbcd6d00f0c36bad8254297d9f33.png)
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解答题-证明题
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适中
(0.65)
【推荐3】请阅读下列材料,并完成相应任务.
勾股定理的证明
勾股定理揭示了直角三角形三条边之间的数量关系,是数学中最重要的定理之一. 勾股定理的证明过程多数采用的方法是“用两种不同的方法和含有a,b,c的式子表示同一个图形的面积”,由于同一个图形的面积相等,从而得到含a,b,c的恒等式,通过化简即可完成勾股定理的证明.借助于图形的面积研究相关的数量关系,是我国古代数学研究中经常采用的重要方法,它充分显示了古人的卓越智慧.
下面是证明勾股定理的一种思路:
如图,用一个等腰直角三角形(
),和两个全等的直角三角形(
)可以拼成一个直角梯形
.其中
;
,用两种不同的方法和含有a,b,c的式子表示梯形
的面积,就能完成勾股定理的证明.
提示:梯形的面积
(上底+下底)
高
任务:
(1)请你根据上述材料中的思路证明勾股定理;
(2)如图,在菱形
中,对角线
相交于点O,
,则
之间的距离为___.
勾股定理的证明
勾股定理揭示了直角三角形三条边之间的数量关系,是数学中最重要的定理之一. 勾股定理的证明过程多数采用的方法是“用两种不同的方法和含有a,b,c的式子表示同一个图形的面积”,由于同一个图形的面积相等,从而得到含a,b,c的恒等式,通过化简即可完成勾股定理的证明.借助于图形的面积研究相关的数量关系,是我国古代数学研究中经常采用的重要方法,它充分显示了古人的卓越智慧.
下面是证明勾股定理的一种思路:
如图,用一个等腰直角三角形(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e903d8183fac889e3959a625baeba1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d70676406f26d339465fe3473c0c05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bc002bb026ac806eed82c16f895a659.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ea46cd838c49e7aea05925b3347ebef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d70676406f26d339465fe3473c0c05.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/6/37b56641-0235-4c1c-868a-78a62e69cc9a.png?resizew=138)
提示:梯形的面积
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f97b5b6e8ef5300075c1727bc64b59f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2468403b3eba9e40bfa36f464e927738.png)
任务:
(1)请你根据上述材料中的思路证明勾股定理;
(2)如图,在菱形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d578394cd8e4d7a705599269c512960.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd3e908df5825bc6c17e629247a8243.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba48366317ebea1c9dd5e4e67e03092.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/6/d69d9dff-448c-4e1c-84b2-0bc227247438.png?resizew=185)
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