如图,平面四边形
中,
,对角线
相交于
.设
,且
,
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/c7c25981-ef7b-43ee-882a-dd28d2548b70.png?resizew=256)
(1)用向量
表示向量
;
(2)若
,记
,求
的解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c53d934a0cd9512e6df17c8f311c3ce4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70ea5e119e3bbe896f6ae674b87f0f4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c8ee11bddaa0420dc8e6550ad5a194f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c80905092755237b3de30d070a47ceca.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/c7c25981-ef7b-43ee-882a-dd28d2548b70.png?resizew=256)
(1)用向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4470a87024a0cfc558a9b0c50554d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4407c0b2e5febf70f610bd00067f105.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f0224b0002bef144d1ddf8ecb019c6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f74237bb03a69527a09cc4d863f279a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1c8ca569e742d9eeee3b85f61bd8e17.png)
21-22高三上·重庆梁平·阶段练习 查看更多[5]
重庆市梁平区2022届高三上学期第一次调研考试数学试题(已下线)专题03 平面向量(数学思想与方法)-备战2022年高考数学二轮复习重难考点专项突破训练(全国通用)(已下线)9.3.1 平面向量基本定理 -2021-2022学年高一数学10分钟课前预习练(苏教版2019必修第二册)(已下线)第05讲 平面向量基本定理-【帮课堂】2021-2022学年高一数学同步精品讲义(苏教版2019必修第二册)(已下线)6.3 平面向量基本定理及坐标表示
更新时间:2021-12-09 20:28:01
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解答题-问答题
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(0.65)
解题方法
【推荐1】三个力
,
,
大小相等,作用于同一点O.要使它们的合力为零,应满足什么条件?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78e7d4bc85cf95d858b6d3051e5beff8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/809f928a25b77674be3116e2e79e6c65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8136e8bf2bde87aba070b76e3a3196.png)
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【推荐2】如图,在平行四边形
中,设
,
, 则
(1)当
,
满足什么条件时,
与
垂直?
(2)当
,
满足什么条件时,
?
(3)
与
可能是相等向量吗?
(4)当
,
满足什么条件时,
平分
与
所夹的角?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac265febbf99dccf51aa0a2253e61f1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a44a918c7cfd942d3a53e584c26685a8.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cc3b82a73fae9b0d470e315cc870101.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cd8bbf47b69bbd7a6263b041290d11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bca35e52b8430246a1cf96e9e617cce.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cc3b82a73fae9b0d470e315cc870101.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aef84d275246c94cd7d9c983231210fd.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cd8bbf47b69bbd7a6263b041290d11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bca35e52b8430246a1cf96e9e617cce.png)
(4)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cc3b82a73fae9b0d470e315cc870101.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cd8bbf47b69bbd7a6263b041290d11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
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【推荐3】如图所示,在
中,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2021/4/7/2694799267225600/2787496447664128/STEM/b6d53a5f-3d33-4eca-afb6-497fc8778726.png?resizew=193)
(1)试用向量
,
来表示
,
;
(2)
交
于
点,若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/812b4f3e7971cdde034d41202967b448.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d64fe2af577d88ef2000744582700957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e7a93a1399ff7a2bde342652479241b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b54aa2b7f9adf409f0ce8e00615432.png)
![](https://img.xkw.com/dksih/QBM/2021/4/7/2694799267225600/2787496447664128/STEM/b6d53a5f-3d33-4eca-afb6-497fc8778726.png?resizew=193)
(1)试用向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1597427446eb525d66724e2024476c45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/888afd002858f23a84a8755a002bed7a.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3533837e3d08c461dea031a44e5424d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ab9468a49f875255a838d1fe65add02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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【推荐1】如图,在平行四边形
中,
为
上一点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/68d85c32-c2a7-40eb-99a5-8c42c7f7b807.png?resizew=199)
(1)试用向量
表示向量
;
(2)若
,求
.
![](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/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa85a8c7deb1370bdec09e1bcacbe891.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/68d85c32-c2a7-40eb-99a5-8c42c7f7b807.png?resizew=199)
(1)试用向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14b704dc322a545a3ebf6979900d13c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fd9e7ed21b7e6f315ec372c49f25498.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9916354bf269cbfc35ad3d4dcf1f41f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95cb34c62f897aa82ef66df42e05a30f.png)
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【推荐2】如图,在△ABO中,
=![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
,
=![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
,AD与BC相交于点M,设
=a,
=b.试用a和b表示向量
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef8337706c550bc095d7a2bd872221a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f605ec0729ce6d72237ad662a06862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f28b09c6074898b0bf992928336eb5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc9656d8286c4d6fa309d6ae347c89e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f605ec0729ce6d72237ad662a06862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc9656d8286c4d6fa309d6ae347c89e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e723e57753f0a4fe1ef8ca1aee0e2117.png)
![](https://img.xkw.com/dksih/QBM/2024/3/4/3446223654125568/3446616043036672/STEM/3fb5fe451659426d932d95a3a36cf486.png?resizew=111)
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解题方法
【推荐1】已知
的外心为O,内心为Ⅰ.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/df8c8c88-8f17-4853-8170-e84751282a48.png?resizew=231)
(1)如图1,若
.
①试用
表示
;
②求
的值.
(2)如图2,若存在实数
,使
,试求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/df8c8c88-8f17-4853-8170-e84751282a48.png?resizew=231)
(1)如图1,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36599d9c1960fed6063b5b598832b143.png)
①试用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbef69bb5ce04abc8a2daaf8da00d9ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a7f004f23ec3f968d885cb111aac4e2.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/140cd18769a89e1160ee8f48b5ebd08d.png)
(2)如图2,若存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83d336dc729dbeda521aef56347d485.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2bcb0cf5182f70cf5f2737b709b4a9c.png)
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解题方法
【推荐2】已知
中的三个内角
,
,
所对的边分别为
,
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a77c3a2878a8ab3816dbe6b7f5e97822.png)
(1)求角
的大小;
(2)若点
在
边上,满足
,且
,
,求
边的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a77c3a2878a8ab3816dbe6b7f5e97822.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e98a8ee55f8d77e8a669cea6c0c7547c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714cc3707bba3bfdb56e251999be8592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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【推荐3】如图,在△OAB中,P为线段AB上的一个动点(不含端点),且满足
.
![](https://img.xkw.com/dksih/QBM/2023/6/20/3263775063826432/3267196066807808/STEM/4452bdc0cd5e4b49aaabbd4ab9957496.png?resizew=158)
(1)若
,用向量
,
表示
;
(2)在(1)的条件下,若
,
,且
,求
的值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba4d488d56b95a44a6b0b40d3e89c010.png)
![](https://img.xkw.com/dksih/QBM/2023/6/20/3263775063826432/3267196066807808/STEM/4452bdc0cd5e4b49aaabbd4ab9957496.png?resizew=158)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1c3ea872a20fdc1843cb5ffce8a554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f605ec0729ce6d72237ad662a06862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc9656d8286c4d6fa309d6ae347c89e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91174b2336306191ba275a87864172b7.png)
(2)在(1)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45252e14150ec0959437856eb30ef624.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a600402d668cfc808ecb2cbd990f9f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ff5c21185c13eae675906dabd3593c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7a66e27ef92fcc51530e54533e23973.png)
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【推荐1】在
,角
,
,
对的边分别为
,
,
,
.
(1)若
外接圆的半径为
,
边上的中线长为
,求
的周长.
(2)若
在线段
上,
平分
,
,且
,求
面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e899c486dc49e560fc4aca05e16835b7.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07527f73ad63ae4c9787398f76ec79cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d78524f98b01fa1dadfd277939665b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d783fe7f3ce673d5d21281174e7a7968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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【推荐2】已知
,向量
与
的夹角为
,求
,
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2924eb37c69fffbdc55fca18a74aa17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b195aa36a3c2753ebf08cb464c52ad1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc23a04cdac6439ea170e799f1c1df5.png)
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