名校
解题方法
1 . 已知复数
,
,
,它们所对应的点分别为
、
、
,在复平面上构成一个正方形的三个顶点.
(1)画出示意图,验证说明
;
(2)求这个正方形的第四个顶点对应的复数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db04f988e1aba18b0a3470d332908c15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70ae34624f8f116b37c06560710e63fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ea8640c311d5f7d3c94cf817b332ad8.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)
(1)画出示意图,验证说明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
(2)求这个正方形的第四个顶点对应的复数.
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名校
2 . 在平面直角坐标系
中,已知点
,点
是直线
上的一个动点.
(1)求
的值;
(2)若四边形
是平行四边形,求点
的坐标;
(3)求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3df2495050da0b4a081bc5b29dbb0dd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d42133b3e5cc0b71837fa670f3cd2ff.png)
(2)若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d4ab45e8e8f0084d8d90a4c1233d86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7787dfab61ed9830b531da365e592bbd.png)
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24-25高一上·全国·课后作业
3 . 如图,在倾角为37°、高
m的斜面上,质量为5kg的物体沿斜面下滑,物体受到的摩擦力是它对斜面压力的0.5倍,
N/kg.求物体由斜面顶端滑到底端的过程中,物体所受各力对物体所做的功.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e753dc81ed21f878fff89e98cccf24a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d601467b73eedb3502914d368752a242.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/5/19/c169b12c-446a-4bb6-b6b6-8ac7082f0440.png?resizew=148)
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名校
解题方法
4 . 已知
外接圆的圆心为
,半径为2,
且
,求:向量
在
上的投影向量的模.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70d34dc0f7588a05e58a8d71aee84776.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4389b837955d3dfb83a9af3423fceb03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbaeae7045ad94158cdf5ae97073bc17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a34bf00aeba15bce2cdee8ab487388dc.png)
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解题方法
5 . 已知向量
是夹角为
的单位向量,且
.
(1)求
;
(2)求
的值;
(3)求向量
与
的夹角
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10814bc3db929e79874befe96cf4e3d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/995eafc7b1b692311db0b94f21b21e10.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94d723baf90e91b4691a2dcdd8f2a53e.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c39d1d88189726ae99c309644fca3494.png)
(3)求向量
![](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/c24095e409b025db711f14be783a406c.png)
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6 . 在
中,点
为
所在平面内一点.
(1)若点
在边BC上,且
,用
表示
;
(2)若点
满足
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ddecea84834f1ad110b363776846c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/471bc8ce66c3e550baaf97be9d742e33.png)
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac077c25a98e791e4a81b1c48c09015d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0be656083580a03c6481fb75881b84f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7239b3f2d88c2e45e17e5de9ae1a332.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c27eda162792128da25f541303a3088.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2688a00327f7f96de6a77ab9b1c9ae7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ddecea84834f1ad110b363776846c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/471bc8ce66c3e550baaf97be9d742e33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef1a0c7211cb871554b9e2f17100d739.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5cb63aeea0b37799404c8fec092b21d.png)
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名校
7 . 已知向量
,其中
.
(1)求
,
,
;
(2)求
与
的夹角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baf8c3958509b6bc08f99ae12af0cecd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f2b6d697fcbaeb5c4afeb19447ca392.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d21c92df13be8b21f9870fc354bdddb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93af88a7628c71d642d3a6df067c15f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08e6f98f23fea7db0f74897928024ca0.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
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8 . (1)求证:
;
(2)已知在
中,
是
的中点,证明:
;
(3)已知
,
,且
与
不共线,当
为何值时,向量
与
互相垂直?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2052b9d309f07cf3b9544f09a2223b71.png)
(2)已知在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e1a5884f5abdf9d72561b7a591eda65.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6316d995f00623f05fc3d56a6cbe5f00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/407538138dd68ab917925c2063cc98e9.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/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9441846da0868582298cece138bec3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bff01c3e3b53271c5d16ad4e02a930ad.png)
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解题方法
9 . 已知点
,且点
满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f721e5a1d0b7dee53969e1f33fd5d9b4.png)
.
(1)若点
在直线
上,求
的值;
(2)若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1845a60deb152288cfbb8e27e6c15096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f721e5a1d0b7dee53969e1f33fd5d9b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4ce60d64df029a90dfe9cdf8c75716.png)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e68367749d9a8c10cc73c384d252390.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/596f68ba4b746cab4b2c26ffce554b5a.png)
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解题方法
10 . 已知点
为
中边
上一点,
.
,求
的值.
(2)设
,
①若
,求
在
上的投影向量;
②若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9105200dcfb31b0f7f6f0b385f12589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/419bec2bb15ceb95999eaee4a451d84b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2797d3cbf5718e2cab76af3b53679f86.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dbc63c370b769fbafc6e193a1f61df2.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe336601a7861afeb7796c737cb8f45f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45eac6e59bd3c4fe72d3254a9dbb927c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbaeae7045ad94158cdf5ae97073bc17.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cd873c768b105640a16c953cea6f0c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27964e6ff5ccfcff357caecd01d22997.png)
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