如图
,在四边形
中,
,
,
,
,
,点
从
出发,以每秒
的速度向点
运动;点
从
同时出发,以每秒
的速度沿着
运动.运动时间为
秒,令
的面积为
,
的面积为
,请回答下列问题:
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/b594058d-be83-4a2a-8883-dbfc4741ce3a.jpg?resizew=406)
(1)请直接写出
,
与
的函数关系式以及对应的
的取值范围;
(2)在如图
所示的平面直角坐标系中画出
,
的图象;
(3)根据图象直接写出当
时,
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dceb5cc71fc50f20649f6b9535fd914.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d9142db4dd2ef151bf3d4a63afb61e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df3b2901ad26337818f75e81448ebb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9d291cfc6c4677d20f8674c57322b46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432043f79e122f291c47453013042704.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048b61a5fb5f420c6d7de88db5bc3aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c78d0ab561d0c9bb9099772c596af8bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7a6be08c747b22834f1425c6253eebc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3df53f221ffb4c1d1ab1a2a0382d1737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d41984f53bb280ba8b5ac00a52ce2825.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd816ec682ddff2b4603684dad0019e6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/b594058d-be83-4a2a-8883-dbfc4741ce3a.jpg?resizew=406)
(1)请直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)在如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
(3)根据图象直接写出当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df86b0da538701c08fb214608e062372.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
更新时间:2024-04-08 17:11:17
|
相似题推荐
解答题-作图题
|
适中
(0.65)
名校
【推荐1】如图,在
中,
,
,
,点D是
的中点,动点M从点B出发,沿着折线
(含端点)运动,速度为每秒1个单位长度,到达A点停止运动,点E,F分别是射线
,
上的动点,AE的长度等于点M走的路程,
,设点M的运动时间为t,点M到
的距离
为
,
的长度为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/28/f7691d93-3ae9-44d7-9d6d-14247e086253.png?resizew=424)
(1)求
关于t的函数关系式并写出自变量的取值范围;
(2)在直角坐标系中画出
的图像,并写出函数
的一条性质;
(3)根据图形直接估计当
时t的取值范围:______.(结果保留1位小数,误差不超过0.2)
![](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/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4494a85de0be0b97a69348115aef8513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5347fb06cc3e48a1fb482c8e30dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b44fe942a886df01ad44e19ef4e6f871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83042953e7f15e984b2da2ee9ca678d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/28/f7691d93-3ae9-44d7-9d6d-14247e086253.png?resizew=424)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7404d4aa0f0bcfe7ebf45d3eeab3cdb6.png)
(2)在直角坐标系中画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7404d4aa0f0bcfe7ebf45d3eeab3cdb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
(3)根据图形直接估计当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df86b0da538701c08fb214608e062372.png)
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解答题-问答题
|
适中
(0.65)
【推荐2】甲、乙两人在一条笔直的道路上相向而行,甲骑自行车从A地到B地,乙驾车从B地到A地,他们分别以不同的速度匀速行驶,已知甲先出发6分钟后,乙才出发,在整个过程中,甲、乙两人的距离y(千米)与甲出发的时间x(分)之间的关系如图所示.
![](https://img.xkw.com/dksih/QBM/2019/9/12/2289205400330240/2290095163236352/STEM/05db7f29ddf943a8941c9f0b2a932032.png?resizew=175)
(1)甲的速度为 千米/分,甲乙相遇时,乙走了 分钟.乙的速度为 千米/分.
(2)求从乙出发到甲乙相遇时,y与x的函数关系式.
(3)乙到达A地时,甲还需 分钟到达终B地.
![](https://img.xkw.com/dksih/QBM/2019/9/12/2289205400330240/2290095163236352/STEM/05db7f29ddf943a8941c9f0b2a932032.png?resizew=175)
(1)甲的速度为 千米/分,甲乙相遇时,乙走了 分钟.乙的速度为 千米/分.
(2)求从乙出发到甲乙相遇时,y与x的函数关系式.
(3)乙到达A地时,甲还需 分钟到达终B地.
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解答题-作图题
|
适中
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【推荐3】小明在学习过程中,遇到这样一个问题:如图1,在菱形ABCD中,点M,N分别是边BC,CD的中点,点P是对角线BD上的动点,连接PM,PN,MN,当△PMN是等腰三角形时,求线段BP的长度.小明根据学习函数的经验,对此问题进行了以下探究,请补充完整:
![](https://img.xkw.com/dksih/QBM/2021/8/11/2783623948419072/2786123904147456/STEM/8b5dcd2d1e0043b4a7fc8289eed23c81.png?resizew=432)
(1)对于点P在对角线BD上的不同位置,画图,测量,得到了线段BP,PM,PN的长度的几组值,如下表:
①通过观察(1)中表格,可以得到菱形ABCD的对角线BD长为 cm,菱形ABCD的边长为 cm;
②在BP,PM,PN的长度这三个量中,确定 的长度是自变量, 的长度和 的长度都是这个自变量的函数;
(2)在平面直角坐标系中画出(1)②中确定的函数图象;
(3)若MN=4,结合函数图象,当△PMN是等腰三角形时,线段BP长度为 .(结果保留一位小数)
![](https://img.xkw.com/dksih/QBM/2021/8/11/2783623948419072/2786123904147456/STEM/8b5dcd2d1e0043b4a7fc8289eed23c81.png?resizew=432)
(1)对于点P在对角线BD上的不同位置,画图,测量,得到了线段BP,PM,PN的长度的几组值,如下表:
BP/cm | 0 | 1.0 | 2.0 | 3.0 | 4.0 | 5.0 | 6.0 | 7.0 | 8.0 |
PM/cm | 2.5 | 1.8 | 1.4 | 1.8 | 2.5 | 3.3 | 4.2 | 5.2 | 6.2 |
PN/cm | 6.2 | 5.2 | 4.2 | 3.3 | 2.5 | 1.8 | 1.4 | 1.8 | 2.5 |
②在BP,PM,PN的长度这三个量中,确定 的长度是自变量, 的长度和 的长度都是这个自变量的函数;
(2)在平面直角坐标系中画出(1)②中确定的函数图象;
(3)若MN=4,结合函数图象,当△PMN是等腰三角形时,线段BP长度为 .(结果保留一位小数)
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解答题-问答题
|
适中
(0.65)
【推荐1】如图,在平面直角坐标系
中,一次函数
由函数
平移得到,且与函数
的图象交于点
.
![](https://img.xkw.com/dksih/QBM/2021/4/21/2704677171429376/2706866809430016/STEM/d0e42958-6cab-4d9e-b225-4668508b4234.png?resizew=251)
(1)求一次函数的表达式;
(2)已知点
,过点
作平行于
轴的直线,交直线
于点
,交函数
的图象于点
.当
时,直接写出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5d501afbd7542f2f724b658edf39af4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71de4ef51a5b73cc7eae71c73c3cc26f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/651c4b1b8f1f54f0af97107020acf253.png)
![](https://img.xkw.com/dksih/QBM/2021/4/21/2704677171429376/2706866809430016/STEM/d0e42958-6cab-4d9e-b225-4668508b4234.png?resizew=251)
(1)求一次函数的表达式;
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/213e4b539a7132a191c4c2fdc5d54d4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5d501afbd7542f2f724b658edf39af4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8198c3b302b3820e86763428eb1e91cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71de4ef51a5b73cc7eae71c73c3cc26f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3463ced6030af957f13f9ba05b977c1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ac67e9a909472ab852d38d2ec66a1e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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解答题-问答题
|
适中
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【推荐2】已知直线
与双曲线都经过点
.
(1)如果点
在直线
上,求m的值;
(2)如果第三象限的点C与点A关于原点对称,点C的纵坐标是
,求双曲线的表达式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f610ee9eb6d3bfe8ee38d96375614d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/921502954d8f4c6e58a95487018a8a04.png)
(1)如果点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ce7be37ff9418a9c95d5dc54814ebd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f610ee9eb6d3bfe8ee38d96375614d.png)
(2)如果第三象限的点C与点A关于原点对称,点C的纵坐标是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
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解答题-问答题
|
适中
(0.65)
【推荐1】在数学学习中,及时对知识进行归纳和整理是改善学习的重要方法,善于学习的小明在学习了一次方程(组),对相关知识进行了归纳整理.
![](https://img.xkw.com/dksih/QBM/2024/3/27/3462835785482240/3463432438775808/STEM/fd329225ab23496e9b97b78b36a24f1c.png?resizew=306)
(1)如他在同一个直角坐标系中画出一次函数
和
的图象(图1),并归纳:
请根据图1和以上方框中的内容,在下面数字序号后写出相应的结论:① ;② ;③ ;④ .
(2)若已知一次函数
和
的图象(如图2),求出它们的交点
(坐标同图1),写出不等式
的解集.
![](https://img.xkw.com/dksih/QBM/2024/3/27/3462835785482240/3463432438775808/STEM/fd329225ab23496e9b97b78b36a24f1c.png?resizew=306)
(1)如他在同一个直角坐标系中画出一次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c31c4f39399ec245a67db2933ed639f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/812eed46a589bde8b7c78a81a8cf9b9a.png)
一次函数与方程的关系 | (1)一次函数的解析式就是一个二元一次方程; (2)点B的横坐标是方程①_____的解: (3)点 ![]() ![]() ![]() ![]() |
一次函数与不等式的关系 | (1)函数![]() ![]() ![]() (2)函数 ![]() ![]() ![]() |
(2)若已知一次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b3c8be9aee074c9a3203abace248ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1efa4f93a051f6e2e377070b8b41192f.png)
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解答题-问答题
|
适中
(0.65)
【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、点B,直线
与直线
交于点
,与x轴交于点D.
(2)求
的面积;
(3)直接写出不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2293ef4197a8d2eae66691153d90675b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21519f4f9c6ae56a51a3d11c220f226f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d383a8b89c44bc7ffa7c9f85064adc8.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
(3)直接写出不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f99df1a7b58018125b99578b779342.png)
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解答题-证明题
|
适中
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【推荐1】完成下面的证明:已知,如图,AB∥CD∥GH,EG平分∠BEF,FG平分∠EFD
求证:∠EGF=90°
证明:∵HG∥AB(已知)
∴∠1=∠3( )
又∵HG∥CD(已知)
∴∠2=∠4( )
∵AB∥CD(已知)
∴∠BEF+___________=180°( )
又∵EG平分∠BEF,FG平分∠EFD (已知)
∴∠1=( )∠BEF,∠2=( )∠EFD ( )
∴∠1+∠2=( ) (∠BEF +∠EFD)=( )
∴∠3+∠4=90°( )即∠EGF=90°
求证:∠EGF=90°
证明:∵HG∥AB(已知)
∴∠1=∠3( )
又∵HG∥CD(已知)
∴∠2=∠4( )
∵AB∥CD(已知)
∴∠BEF+___________=180°( )
又∵EG平分∠BEF,FG平分∠EFD (已知)
∴∠1=( )∠BEF,∠2=( )∠EFD ( )
∴∠1+∠2=( ) (∠BEF +∠EFD)=( )
∴∠3+∠4=90°( )即∠EGF=90°
![](https://img.xkw.com/dksih/QBM/2018/4/12/1922422776872960/1922981479931904/STEM/247c8131-e423-4ed3-9558-dd93a5cb2de8.png?resizew=174)
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解答题-问答题
|
适中
(0.65)
【推荐2】已知直线
与直线
,
分别交于点
、
两点,
和
的角平分线交于点
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a88237029549e19b899122b49bcc7a4.png)
;
(2)如图2,
和
的角平分线交于点
,求
的度数;
(3)如图3,若
,延长线段
得射线
,延长线段
得
,射线
绕点
以每秒
的速度逆时针旋转
后停止,射线
绕点
以每秒
的速度顺时针旋转
后停止.设它们同时转动
秒,问?
为多少时,射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b6a23d521606a35298bbf147f7f830c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7724af2445c723d1392aed54d210ed3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a88237029549e19b899122b49bcc7a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
(2)如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d31cb19d4833eec524dc1d0bfdf97fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/412cd13acdc047800dc7ce23852a8a4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/595522dfc96cc92f1d84ea0f298bb738.png)
(3)如图3,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e7bc0b981b06e7e2e5df126b43b4edf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f541f7ae7c39082d202efd28805c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e44f0ea0302c32144018b1185e4ce0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c2293f93791a597bf0162411f3395f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/761c8ad06256cfb9e92e98e161b80574.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e44f0ea0302c32144018b1185e4ce0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76c12e76fbd84eeec721386bd3b04cc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b2ccc34a8b3cf908af78bdbe804afac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/761c8ad06256cfb9e92e98e161b80574.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/654c79a470d5af5e0a34fd9233da5118.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfe639eab78eafd2d40ea70aa5d3f21d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb6f0ff1492c3ee57be845b181891b70.png)
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