如图1,四边形
是正方形,
是
边上的一个动点(点
与
不重合),以
为一边在正方形
外作正方形
,连接
,
.我们探究下列图中线段
、线段
的长度关系及所在直线的位置关系:
)猜想如图
中线段
,线段
的数量关系是______ ;线段
,
的位置关系____
类比探究:
(
)将图
中的正方形
绕着点
按顺时针(或逆时针)方向旋转任意角度
,得到如图
,如图
情形,请你判断(
)
中得到的结论是否仍然成立,并选取图
证明你的判断;
拓展应用:
(
)已知
,
,在正方形
绕点
旋转的过程中,当点
在同一条直线上时,
的长度是多少?请直接写出答案
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aa69fd8445d01c98634c2e885b47d5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b1f13007c6d134c50004c62dc240707.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
类比探究:
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b1f13007c6d134c50004c62dc240707.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1c9ae241fd78126274c65e17990c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
拓展应用:
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0761165f1176f3a5fe4f7b052832316d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b1f13007c6d134c50004c62dc240707.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd665ffb2f62cf6b4d035546e3ab8f7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
2024·山东东营·模拟预测 查看更多[2]
更新时间:2024-06-15 09:31:43
|
相似题推荐
解答题-证明题
|
较难
(0.4)
【推荐1】如图①,
和
是有公共顶点的等腰直角三角形,
,点P为射线
的交点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/27/863bc792-a049-4809-86bb-0ef6d523914e.png?resizew=211)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/27/5ddb8908-afd1-4e44-aa5a-5afe91245e98.png?resizew=221)
(1)如图②,将
绕点A旋转,当C、D、E在同一条直线上时,连接
、
,求证:
且
.
(2)若
,把
绕点A旋转,
①当
时,求
的长;
②旋转过程中线段
长的最小值是_______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26813466e2ee49a493881a4384fc8748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/692c58a2af64d705cd4a988ed2bfbc3d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/27/863bc792-a049-4809-86bb-0ef6d523914e.png?resizew=211)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/27/5ddb8908-afd1-4e44-aa5a-5afe91245e98.png?resizew=221)
(1)如图②,将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/421291381be28da4bd16560fd383b4a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/509d8dd6031dc0ef92075877e53fe201.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed9b4054d15a5c4582d15b7a8ef34875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28c65319e9026d1db4d468f69fd8f9ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
②旋转过程中线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
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【推荐2】如图,正方形ABCD中,
,在边CD的右侧作等腰三角形DCE,使DC=DE,记∠CDE为a (0°<a<90°),连接AE,过点D作DG⊥AE,垂足为G,交EC的延长线于点F,连接AF.
![](https://img.xkw.com/dksih/QBM/2020/7/24/2513012898889728/2514023033413632/STEM/e026c931b24a4193b5d4f91e55f9b98b.png?resizew=222)
(1)求∠DEA的大小(用
的代数式表示);
(2)求证:△AEF为等腰直角三角形;
(3)当
时,求点E到CD的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06201e4f55b78d8b30afb257d5a1b16b.png)
![](https://img.xkw.com/dksih/QBM/2020/7/24/2513012898889728/2514023033413632/STEM/e026c931b24a4193b5d4f91e55f9b98b.png?resizew=222)
(1)求∠DEA的大小(用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(2)求证:△AEF为等腰直角三角形;
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad18d3f2e42fc960e17ff4bde2b2f7cc.png)
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名校
【推荐1】如图1,已知
ABCD,∠A=∠BEF=a,E为AD边上一点,F为DC边上一点,BE=EF.
![](https://img.xkw.com/dksih/QBM/2022/4/17/2960158443356160/2962496001695744/STEM/3132336a-dc8a-468b-89df-c18705466cf5.png?resizew=707)
(1)求证:∠ABE=∠DEF
(2)如图1,若a=45°,AE=5, DE=1, 求
ABCD的面积;
(3)如图2,若a=30°,AE=4,DE=2
.求线段BE的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81a5328919a7cec382c2e91c9c528fc1.png)
![](https://img.xkw.com/dksih/QBM/2022/4/17/2960158443356160/2962496001695744/STEM/3132336a-dc8a-468b-89df-c18705466cf5.png?resizew=707)
(1)求证:∠ABE=∠DEF
(2)如图1,若a=45°,AE=5, DE=1, 求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81a5328919a7cec382c2e91c9c528fc1.png)
(3)如图2,若a=30°,AE=4,DE=2
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
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【推荐2】问题探究
(1)请在图1中过点A画一条直线,将
分成面积相等的两部分;
(2)如图2,在
中,
,
,点E在
的延长线上,且
,过点E作直线l分别交边
,
于点M,N.若直线l将
的面积平分,则请求出
的长度;
问题解决
(3)某市为保护生态环境,方便市民观光游览,准备在秦岭北麓兴建一处“和谐观光园”,其形状为四边形
,如图3所示.在四边形
中,
,实际长度
公里,
公里,
公里,
公里,点P在
上且
公里,根据用地需求,需在
上确定点E,将五边形
作为特色植物繁育展示区,使其面积为四边形
总面积的一半,并在
上确定点F,在
中修建游客休息区,剩余部分作为花卉展示区,为方便游客游览,要求修建
、
、
三条观光道路的总长度最小.请问这样的
是否存在?若存在,请求出点E到点B的距离及
周长的最小值;若不存在,请说明理由.
(1)请在图1中过点A画一条直线,将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)如图2,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377b5f7197e5bd1afeea4d931307956a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
问题解决
(3)某市为保护生态环境,方便市民观光游览,准备在秦岭北麓兴建一处“和谐观光园”,其形状为四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59281d3136f2c67c078d98842171224d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf7679c8b4b1e442ce4286d4b0e9c32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d649afbddd907f0dfec1420f02f82fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df049f15adb6667113ceee3a6638cd0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bafd21730b3a22d6b078eeb1a18bc468.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/682c9d9b6ad1bc45ddbd6dd01060207b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48c95e812db3db543e8874a4287ea321.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91b51d3992644d37dc71c9b5a97d515c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91b51d3992644d37dc71c9b5a97d515c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91b51d3992644d37dc71c9b5a97d515c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/2/e7f527d6-4042-4ce9-9aef-a9c5fcb690bd.png?resizew=514)
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【推荐1】如图,在
ABC中,∠ACB=90°,以点A为圆心,AC的长为半径作⊙A,交AB于点D,交CA的延长线于点E.过点E作EF∥AB,交⊙A于点F,连接AF,BF,DF.
(1)求证:BF是⊙A的切线;
(2)填空:
①当四边形ADFE是周长为20的菱形时,BF= ;
②当
= 时,四边形ACBF是正方形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
(1)求证:BF是⊙A的切线;
(2)填空:
①当四边形ADFE是周长为20的菱形时,BF= ;
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f276ad76c075f4be32ad326d223cf3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/c70182cb-1e34-4629-a5cc-3ff47b4ba609.png?resizew=184)
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【推荐2】在平面直角坐标系xOy中,对于两点A,B,给出如下定义:以线段AB为边的正方形称为点A,B的“确定正方形”.如图1为点A,B的“确定正方形”的示意图.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/8333f524-fa1c-4aa9-9873-2aeb55a6c0ae.png?resizew=449)
(1)如果点C的坐标为(0,1),点D的坐标为(2,1),画出点C,D的一个“确定正方形”,这个正方形的面积是 ;
(2)已知点O的坐标为(0,0),点M为直线y=x+b(b>0)上一动点,当点O,M的“确定正方形”的面积最小,且最小面积为1时,求b的值.
(3)已知点E在以边长为2的正方形的边上,且该正方形的边与两坐标轴平行,对角线交点为P(m,0),点F在直线y=﹣x﹣2上,若要使所有点E,F的“确定正方形”的面积都不小于2,直接写出m的取值范围.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/8333f524-fa1c-4aa9-9873-2aeb55a6c0ae.png?resizew=449)
(1)如果点C的坐标为(0,1),点D的坐标为(2,1),画出点C,D的一个“确定正方形”,这个正方形的面积是 ;
(2)已知点O的坐标为(0,0),点M为直线y=x+b(b>0)上一动点,当点O,M的“确定正方形”的面积最小,且最小面积为1时,求b的值.
(3)已知点E在以边长为2的正方形的边上,且该正方形的边与两坐标轴平行,对角线交点为P(m,0),点F在直线y=﹣x﹣2上,若要使所有点E,F的“确定正方形”的面积都不小于2,直接写出m的取值范围.
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解答题-问答题
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【推荐1】如图,正方形
的边长为
点
,
分别在边
,
上,且
,
的延长线交
的延长线于点
,
的延长线交
的延长线于点
,连接
,
,
.
______
;
填
或
或![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be4a42e8fb5834583d6545c6fb572d05.png)
(2)设
,
①
的面积
有变化吗?如果变化,请求出
与
的函数关系式;如果不变化,请求出定值;
②请直接写出使
是等腰三角形的
值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c9ab51e0bae2c3b0f6c556ea9cdf7ad.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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26526faf0e64ce31688026630b502427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e95777a5aa465745ef2011bd042b3216.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d890499dca9a8ef30addafe41d6e771.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392cdb9d30684cce244bef94b8d861b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff7942da6c3fc4005256fb1458557c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be4a42e8fb5834583d6545c6fb572d05.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffcb0816ee2da7ddd071156a900f9eed.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2f8b3d45ae1743416253d835c054456.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
②请直接写出使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bde5e96c203f387b2004b4abf5f839f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】如图,已知正方形
的边长为
,点
是射线
上一点(点
不与点
、
重合),过点
作
,交边
的延长线于点
,直线
分别交射线
、射线
于点
、
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/15/3122a3ff-0cac-4a50-a486-81e36c304e3a.png?resizew=468)
(1)当点
在边
上时,如果
,求
的余切值;
(2)当点
在边
延长线上时,设线段
,
,求
关于
的函数解析式,并写出函数定义域;
(3)当
时,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ed934aa29859e93b1f758229a12581.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/15/3122a3ff-0cac-4a50-a486-81e36c304e3a.png?resizew=468)
(1)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/819945a50ff4155ed593bbc2be82ed30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060705794ef87cc71dac40c57f27b1d2.png)
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c29bf5a05dd46f6e03dfd22c32f7ce1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db0db27cf7d505c012bbbcc27120bd68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a0268d04b9dea7629af27af9a0285a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc6fe7ef5fca37baa3cc7fb984cb6e2.png)
您最近一年使用:0次