1 . 为了解疫情期间学生网络学习的学习效果,东坡中学随机抽取了部分学生进行调查.要求每位学生从“优秀”,“良好”,“一般”,“不合格”四个等次中,选择一项作为自我评价网络学习的效果.现将调查结果绘制成如图两幅不完整的统计图,请结合图中所给的信息解答下列问题:
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/e428c93e-38bf-4812-bb15-d032e11a7158.png?resizew=356)
(1)这次活动共抽查了__________人.
(2)将条形统计图补充完整,并计算出扇形统计图中,学习效果“一般”的学生人数所在扇形的圆心角度数.
(3)张老师在班上随机抽取了4名学生,其中学习效果“优秀”的1人,“良好”的2人,“一般”的1人,若再从这4人中随机抽取2人,请用画树状图法,求出抽取的2人学习效果全是“良好”的概率.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/e428c93e-38bf-4812-bb15-d032e11a7158.png?resizew=356)
(1)这次活动共抽查了__________人.
(2)将条形统计图补充完整,并计算出扇形统计图中,学习效果“一般”的学生人数所在扇形的圆心角度数.
(3)张老师在班上随机抽取了4名学生,其中学习效果“优秀”的1人,“良好”的2人,“一般”的1人,若再从这4人中随机抽取2人,请用画树状图法,求出抽取的2人学习效果全是“良好”的概率.
您最近一年使用:0次
2 . 已知:如图,一次函数的图象与反比例函数的图象交于
两点,与
轴正半轴交于点
,与
轴负半轴交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/69df1a9f-7667-4af0-a9bf-563fe150edb7.png?resizew=176)
(1)求反比例函数的解析式;
(2)当
时,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35c25b1fd10831f3aed13a862aa93e24.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/69df1a9f-7667-4af0-a9bf-563fe150edb7.png?resizew=176)
(1)求反比例函数的解析式;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc27da9d3158ea1caeaac45618a09b2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
3 . 实践操作:
第一步:如图1,将矩形纸片
沿过点
的直线折叠,使点
落在
上的点
处,得到折痕
,然后把纸片展平.
第二步:如图2,将图1中的矩形纸片
沿过点
的直线折叠,点
恰好落在
上的点
处,点
落在点
处,得到折痕
交
于点
交
于点
,再把纸片展平.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/3274c214-8391-4e0d-acc1-1db0495f3bed.png?resizew=293)
问题解决:
(1)如图1,填空:四边形
的形状是__________.
(2)如图2,线段
与
是否相等?若相等,请给出证明;若不等,请说明理由;
(3)如图2,若
,求
的值.
第一步:如图1,将矩形纸片
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
第二步:如图2,将图1中的矩形纸片
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/765ea5b7cfea102af1be802787ed42eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3275edb14633cbd5fae25fcc0276628.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/3274c214-8391-4e0d-acc1-1db0495f3bed.png?resizew=293)
问题解决:
(1)如图1,填空:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0054610b07c11f3cb88aa87b58c2df11.png)
(2)如图2,线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/199336204fbca97766bf24b1dc5fdc53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce6c0e9de83f2e64ae33609fc08459d.png)
(3)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a33bd96f676101869a9f1bc692066c12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd13e6bd1e3d7815d82b6fe073123af5.png)
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4 . 如图,点
为
中点,分别延长
到点
到点
,使
.以点
为圆心,分别以
为半径在
上方作两个半圆.点
为小半圆上任一点(不与点
重合),连接
并延长交大半圆于点
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/1ddf5ce2-4468-4d8c-b5ec-b71201674b43.png?resizew=390)
(1)①求证:
;
②写出
和
三者间的数量关系,并说明理由.
(2)若
,当
最大时,直接指出
与小半圆的位置关系,并求此时
(答案保留
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fa48616f1944739471d03422859b8e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33cbad6599796efc1c177ae9349feda9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8044faecc4d5a611814a7f1e64dbf8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6f0cb663c82fc5de837fa273f983ce8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/1ddf5ce2-4468-4d8c-b5ec-b71201674b43.png?resizew=390)
(1)①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fb0368d6e9824a085e5b41c2da993d7.png)
②写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/497b955fd8c7d39a388ed329624d9bb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b6aed6102edbc4138df13cba9c264b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/637f7d8b87adc59c9b06b09803a06553.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f5389990c3a0c5373f3bd9fb2454c9.png)
您最近一年使用:0次
5 . 用承重指数
衡量水平放置的长方体木板的最大承重量.实验室有一些同材质同长同宽而厚度不一的木板,实验发现:木板承重指数
与木板厚度
(厘米)的平方成正比,当
时,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/bb308bd5-f038-4a2e-a582-60444187cc90.png?resizew=208)
(1)求
与
的函数关系式.
(2)如图,选一块厚度为6厘米的木板,把它分割成与原来同长同宽但薄厚不同的两块板(不计分割损耗).设薄板的厚度为
(厘米),
.
①求
与
的函数关系式;
②x为何值时,Q是
的3倍?[注:(1)及(2)中的①不必写x的取值范围].
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91edc7e2d4811f5ea6c01284cf00393a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91edc7e2d4811f5ea6c01284cf00393a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdde9539c359cd6f4793fd8190cecd44.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/bb308bd5-f038-4a2e-a582-60444187cc90.png?resizew=208)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91edc7e2d4811f5ea6c01284cf00393a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)如图,选一块厚度为6厘米的木板,把它分割成与原来同长同宽但薄厚不同的两块板(不计分割损耗).设薄板的厚度为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54d39f07fccf84bab725f45497e29a01.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
②x为何值时,Q是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f26398218820ab57e8c6b414c6ff1db6.png)
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6 . 图①、图②、图③都是
的正方形网格,每个小正方形的顶点称为格点.
均为格点.在给定的网格中,按下列要求画图:
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/32e1f161-731b-4bcc-8100-b0db9ea25764.png?resizew=346)
(1)在图①中,画一条不与
重合的线段
,使
与
关于某条直线对称,且
为格点.
(2)在图②中,画一条不与
重合的线段
,使
与
关于某条直线对称,且
为格点.
(3)在图③中,画一个
,使
与
关于某条直线对称,且
为格点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/777d8fccf0cf8b55a68488fe48b78744.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/32e1f161-731b-4bcc-8100-b0db9ea25764.png?resizew=346)
(1)在图①中,画一条不与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
(2)在图②中,画一条不与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
(3)在图③中,画一个
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/927456b0989846a2f1573844bbaa2105.png)
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7 . 如图,甲、乙两人(看成点)分别在数轴
和5的位置上,沿数轴做移动游戏.每次移动游戏规则:
裁判先捂住一枚硬币,再让两人猜向上一面是正是反,而后根据所猜结果进行移动.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/16/a3aa0688-0ca3-4788-bdea-948bf41104cd.png?resizew=233)
①若都对或都错,则甲向东移动1个单位,同时乙向西移动1个单位;
②若甲对乙错,则甲向东移动4个单位,同时乙向东移动2个单位;
③若甲错乙对,则甲向西移动2个单位,同时乙向西移动4个单位.
(1)经过第一次移动游戏,求甲的位置停留在正半轴上的概率
;
(2)从如图的位置开始,若完成了10次移动游戏,发现甲、乙每次所猜结果均为一对一错.设乙猜对
次,且他最终停留的位置对应的数为
,试用含
的代数式表示
,并求该位置距离原点
最近时
的值;
(3)从如图的位置开始,若进行了
次移动游戏后,甲与乙的位置相距2个单位,直接写出
的值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
裁判先捂住一枚硬币,再让两人猜向上一面是正是反,而后根据所猜结果进行移动.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/16/a3aa0688-0ca3-4788-bdea-948bf41104cd.png?resizew=233)
①若都对或都错,则甲向东移动1个单位,同时乙向西移动1个单位;
②若甲对乙错,则甲向东移动4个单位,同时乙向东移动2个单位;
③若甲错乙对,则甲向西移动2个单位,同时乙向西移动4个单位.
(1)经过第一次移动游戏,求甲的位置停留在正半轴上的概率
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)从如图的位置开始,若完成了10次移动游戏,发现甲、乙每次所猜结果均为一对一错.设乙猜对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(3)从如图的位置开始,若进行了
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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8 . 如图所示,将一个半径
,圆心角
的扇形纸板放置在水平面的一条射线
上,在没有滑动的情况下,将扇形
沿射线
翻滚至
再次回到
上时,
运动的路线长为__________
.(计算结果不取近似值)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eae1859ae3035da683f926f3d7ddf9bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f05d0ebdc824907a12cd725d1b3011.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a77343ecde1c2665df291761b6563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/53ebc70a-cabb-4af9-b88e-b942e11e6f3b.png?resizew=363)
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9 . 匈牙利著名数学家爱尔特希(P.Erdos,1913-1996)曾提出:在平面内有
个点,其中每三个点都能构成等腰三角形,人们将具有这样性质的
个点构成的点集称为爱尔特希点集.如图,是由五个点
构成的爱尔特希点集(它们为正五边形的任意四个顶点及正五边形的中心构成),则
的度数是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d1ff865f265f5f66345d554a37603a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/565d0de7845e77737b774e8db6d43ee1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/6dfae4e0-b730-48c7-9cd6-d7c2ec77019e.png?resizew=167)
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10 . 如图,在
中,
,分别以点
为圆心,以大于
的长为半径画弧,两弧分别交于点
,作直线
交
点
;以点
为圆心,适当长为半径画弧,分别交
于点
,再分别以点
为圆心,大于
的长为半径画弧,两弧交于点
,作射线
,此时射线
恰好经过点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce2a8bf5e05a07c93a7104839fc21849.png)
__________ 度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2f1910ea311f93b4f157b5464273a72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ebaa32f4f1f4f807ca9aeb7fb29951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d49404351575703cfe8325d1352ec9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86e203b7c9a6600e0272c58a23733490.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffea75cc9ccdb9371d82864d1dd086f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1ae536809b1161fd4e83fdc7f42be96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1ae536809b1161fd4e83fdc7f42be96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52d092504d3c33c48be43f23b788efd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce2a8bf5e05a07c93a7104839fc21849.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/93b4a46f-8dbd-4ad8-86a7-f26f7f0d4d85.png?resizew=202)
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