名校
1 . 用一个半径为12厘米圆心角为
的扇形纸片PAD卷成一个侧面积最大的无底圆锥(接口不用考虑损失),放于水平面上.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/3/224704fe-cce9-44c1-9ab5-d8ca6213110b.png?resizew=498)
(1)无底圆锥被一阵风吹倒后(如图1),求它的最高点到水平面的距离;
(2)扇形纸片PAD上(如图2),C是弧AD的中点,B是弧AC的中点,卷成无底圆锥后,求异面直线PA与BC所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f785147690f83dcee0a0bc6c327e75a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/3/224704fe-cce9-44c1-9ab5-d8ca6213110b.png?resizew=498)
(1)无底圆锥被一阵风吹倒后(如图1),求它的最高点到水平面的距离;
(2)扇形纸片PAD上(如图2),C是弧AD的中点,B是弧AC的中点,卷成无底圆锥后,求异面直线PA与BC所成角的大小.
您最近一年使用:0次
2019-12-12更新
|
872次组卷
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8卷引用:上海市宜川中学2018-2019学年高三上学期12月月考数学试题
上海市宜川中学2018-2019学年高三上学期12月月考数学试题(已下线)重难点05 空间向量与立体几何-2021年高考数学【热点·重点·难点】专练(上海专用)(已下线)专题5.8 期末考前选做30题(解答题压轴版)-2020-2021学年高二数学下学期期末专项复习(沪教版)上海市浦东复旦附中分校2021-2022学年高一下学期5月学科反馈数学试题(已下线)8.1 基本立体图形2(分层作业)-【上好课】2022-2023学年高一数学同步备课系列(人教A版2019必修第二册)上海市嘉定区第二中学2023-2024学年高二上学期期中数学试题上海市复旦中学2023-2024学年高二上学期期中数学试题(已下线)第二章 立体几何中的计算 专题一 空间角 微点2 异面直线所成角(二)【培优版】
名校
2 . 如图①,有一个圆柱形状的玻璃水杯,底面圆的直径为20
,高为30
,杯内有20
深的溶液,现将水杯倾斜,且倾斜时点
始终在桌面上,设直径
所在直线与桌面所成的角为
(图②).
![](https://img.xkw.com/dksih/QBM/2019/11/9/2330352072089600/2330755445817344/STEM/53f6e377-f8de-4704-ba84-7ad3350e3cc8.png?resizew=449)
(1)求图②圆柱的母线与液面所在平面所成的角(用
表示);
(2)要使倾斜后容器内的溶液不会溢出,求角
的最大值;
(3)现需要倒出的溶液体积不少于![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfce2106c9ad85e4965af5d95c9bf4d8.png)
,当
时,能实现要求吗?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97153bc3d02dfb38ee046487a8037a41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97153bc3d02dfb38ee046487a8037a41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97153bc3d02dfb38ee046487a8037a41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://img.xkw.com/dksih/QBM/2019/11/9/2330352072089600/2330755445817344/STEM/53f6e377-f8de-4704-ba84-7ad3350e3cc8.png?resizew=449)
(1)求图②圆柱的母线与液面所在平面所成的角(用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(2)要使倾斜后容器内的溶液不会溢出,求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(3)现需要倒出的溶液体积不少于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfce2106c9ad85e4965af5d95c9bf4d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3b77fcbd8001b946d98b01b7d4999ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d02d80d4e2f6f984036bd22a1a2077b.png)
您最近一年使用:0次
2019-11-10更新
|
836次组卷
|
4卷引用:上海市七宝中学2017-2018学年高二下学期期中数学试题
上海市七宝中学2017-2018学年高二下学期期中数学试题(已下线)专题4.5 简单几何体【压轴题型专项训练】-2020-2021学年高二数学下学期期末专项复习(沪教版)浙江省宁波市北仑中学2021-2022学年高一(2-10班)下学期期中数学试题(已下线)模块一专题6《简单几何体的表面积和体积》单元检测篇B提升卷
3 . 定义空间点到几何图形的距离为:这一点到这个几何图形上各点距离中最短距离.
(1)在空间,求与定点
距离等于1的点所围成的几何体的体积;
(2)在空间,线段
(包括端点)的长等于1,求到线段
的距离等于1的点所围成的几何体的体积;
(3)在空间,记边长为1的正方形
区域(包括边界及内部的点)为
,求到
距离等于1的点所围成的几何体的体积.
(1)在空间,求与定点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(2)在空间,线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(3)在空间,记边长为1的正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa35373ec4e4684107b42adb7a5161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa35373ec4e4684107b42adb7a5161.png)
您最近一年使用:0次
名校
4 . 如图,在四棱锥
中,
为
中点,侧棱
,底面
为直角梯形,其中
,
,
平面
,
、
分别是线段
、
上的动点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/3fafa373-f351-486b-a2e1-5edac1600d8d.png?resizew=194)
(1)求证:
平面
;
(2)当三棱锥
的体积取最大值时,求
到平面
的距离;
(3)在(2)的条件下求
与平面
所成角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1328e05d150f86dbe18656662eaa8f6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04a93f5289c1483bc39b0125fdc8dd67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae1e04eeb4de72e5750dae77bcb6f88a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06da796ecac9d134225e1f456e413822.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/3fafa373-f351-486b-a2e1-5edac1600d8d.png?resizew=194)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e126c16032892966489053f44b9048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)当三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b115316e0fcd2ef46a4dd383472996e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(3)在(2)的条件下求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
5 . 如下图,在直角梯形
中,
,
,点
为线段
的中点,将
沿
折起,使平面
平面
,得到几何体
,如图2所示.
![](https://img.xkw.com/dksih/QBM/2017/11/16/1818421100666880/1819248615538688/STEM/cd515f49d35747619b0617c1c55c21f5.png?resizew=197)
![](https://img.xkw.com/dksih/QBM/2017/11/16/1818421100666880/1819248615538688/STEM/20e44681037c47528647c3aac9011f79.png?resizew=197)
(1)求证:
平面
;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90b86d64ab46c794ca215bd681fdb33f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84e0b7d845cbceccd3e76ca461fcc534.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbced129627233661d88e9663a9e13c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06123e81c41198c76a3335757fac2c93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
![](https://img.xkw.com/dksih/QBM/2017/11/16/1818421100666880/1819248615538688/STEM/cd515f49d35747619b0617c1c55c21f5.png?resizew=197)
![](https://img.xkw.com/dksih/QBM/2017/11/16/1818421100666880/1819248615538688/STEM/20e44681037c47528647c3aac9011f79.png?resizew=197)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfe67036b4671b5d2a5c55b48c4d3bb9.png)
您最近一年使用:0次
2017-11-17更新
|
2063次组卷
|
5卷引用:河北省石家庄市第一中学2017-2018学年高二上学期期中考数学(文)试题
名校
6 . 如图,已知三棱台
中,
,M是
的中点,N在线段
上,且
,过点
的平面把这个棱台分为两部分,求体积较小部分与体积较大部分的体积比值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/439cf259dd6137aa31bb99244a04ddfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca07492a4353d05ca6918115f92a720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3c6fe9427e64e9be83f2f5c01ceea4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/25/ebe40430-0f31-49ec-973f-35d5b1ad4676.png?resizew=171)
您最近一年使用:0次
18-19高二下·上海·期中
名校
7 . 平面图形很多可以推广到空间中去,例如正三角形可以推广到正四面体,圆可以推广到球,平行四边形可以推广到平行六面体,直角三角形也可以推广到直角四面体,如果四面体
中棱
两两垂直,那么称四面体
为直角四面体. 请类比直角三角形中的性质给出2个直角四面体中的性质,并给出证明.(请在结论
中选择1个,结论4,5中选择1个,写出它们在直角四面体中的类似结论,并给出证明,多选不得分,其中
表示斜边上的高,
分别表示内切圆与外接圆的半径)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/766565857d28617cc4c2a26ecf76ec24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5332ae9dc9d9c4cff2ac5262714d899c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dce64d610e7f309e414d9abe7ff2e3.png)
直角三角形![]() | 直角四面体![]() | |
条件 | ![]() | ![]() |
结论1 | ![]() | |
结论2 | ![]() | |
结论3 | ![]() | |
结论4 | ![]() | |
结论5 | ![]() |
您最近一年使用:0次
8 . 如图,在三棱柱
中,
底面
,
,
,
,
,
是线段
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/e11707e5-9b2a-4c22-89d8-62716d4022b4.png?resizew=160)
(1)证明:
平面
;
(2)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a3c5d2cbe5cfa47fde68ff3b5b81469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e91c0da042c5af6c3540849bb686bc03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9778ae9823e8430d73d87c57fc47b185.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/e11707e5-9b2a-4c22-89d8-62716d4022b4.png?resizew=160)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca714e3eade6d63792b729f4ff9f8316.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f62fd0b510920be6bc60d170c3ff3da3.png)
(2)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bfe033503db0cacc5ba9f9e97e74618.png)
您最近一年使用:0次
2019-01-16更新
|
889次组卷
|
4卷引用:【校级联考】河南省平顶山市2018-2019学年高一上学期六校联考数学期末试题
名校
9 . 如图,四棱锥
中,
平面
,
,
,
,
.
是棱
上的一点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/d5011399-d5af-4b86-a96d-509ff12a2eed.png?resizew=192)
(1)求证:平面
平面
;
(2)若二面角
的余弦值为
.多面体
的体积为
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f1897a7e856b42f8cee0f286ad913d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/633bf2de732ae51fc06ef3d559915da0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e298f750f819b60a3c061d5e504bb6e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/d5011399-d5af-4b86-a96d-509ff12a2eed.png?resizew=192)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/677d1863ff4d8ac1604b18149d4f320f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5102c216393e133fa25dba98cd78535.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/279001a2a8b8c77cb126d43f93971ec6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/738c2eb3b99133f96c55b643911d2f28.png)
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2020-05-24更新
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618次组卷
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2卷引用:重庆市第八中学2019-2020学年高三下学期第四次月考数学(理)试题
解题方法
10 . 球面几何在研究球体定位等问题有重要的基础作用.球面上的线是弯曲的,不存在直线,连接球面上任意两点有无数条曲线,它们长短不一,其中这两点在球面上的最短路径的长度称为两点间的球面距离.
纬线,赤道以北叫做北纬.如图1,将地球看作球体,假设地球半径为
,球心为
,北纬
的纬线所形成的圆设为圆
,且
是圆
的直径,球面被经过球心
和点
,
的平面截得的圆设为圆
,求圆
中劣弧
的长度,并判断其是否是
,
两点间的球面距离(只需判断、无需证明).
(2)如图2,点
,
在球心为
的球面上,且
不是球的直径,试问
,
两点间的球面距离所在的圆弧
是否与球心
共面?若是,写出证明过程,并求出当
,
时,
,
两点间球面距离所在的圆弧
与球心
所形成的扇形
的面积;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235d495d88b8e51f89e2e4da27328025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12fe32dfbd66709875c5b9f79c9496da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb0628cecbfc98d390e5447d52414e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12fe32dfbd66709875c5b9f79c9496da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/240d929040e21e7991481149b73a79a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
(2)如图2,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c93ef48e154646ef0564de14a990c2e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c467c10aa2eabce3af68c1213d88043b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c880639a6164aa127cf38b63aebde50.png)
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