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解题方法
1 . 已知向量
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/477a477b8ab4bb5442a0fc1a334ade4e.png)
A.![]() ![]() |
B.当![]() ![]() |
C.当![]() ![]() ![]() |
D.当![]() ![]() ![]() |
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2023-07-26更新
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271次组卷
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3卷引用:河北省廊坊市文安县第一中学2023-2024学年高一下学期4月联考冲刺数学试题
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2 . 下列命题中,正确的有( )
A.若![]() ![]() ![]() ![]() ![]() ![]() |
B.若![]() ![]() ![]() ![]() |
C.对非零向量![]() ![]() ![]() |
D.平面内任意一个向量都可以用另外两个不共线向量表示 |
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2022-05-02更新
|
1001次组卷
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3卷引用:河北省邯郸市大名县第一中学2023-2024学年高一下学期3月月考数学试卷
河北省邯郸市大名县第一中学2023-2024学年高一下学期3月月考数学试卷安徽省合肥市第六中学、第八中学、168中学等校2021-2022学年高一下学期期中数学试题(A卷)(已下线)6.3.1 平面向量基本定理(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)
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3 . 给出以下说法,其中不正确的是( )
A.若![]() ![]() |
B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() |
D.平面内任意两个非零向量都可以作为表示平面内任意一个向量的一组基底. |
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解题方法
4 . 如图,
为
的重心,
分别为
上的动点,且线段
经过点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09e7170bb4a2ddcef39391a06c989162.png)
![](https://img.xkw.com/dksih/QBM/2021/4/6/2693988590878720/2800775601700864/STEM/3bd9a62e-2c61-4241-a825-a7a44d4bf576.png?resizew=285)
(1)若
,求![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66ba239cbf38596abf32bfbedf66afd.png)
(2)若
,求
的最小值及取最小值时
与
的夹角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09e7170bb4a2ddcef39391a06c989162.png)
![](https://img.xkw.com/dksih/QBM/2021/4/6/2693988590878720/2800775601700864/STEM/3bd9a62e-2c61-4241-a825-a7a44d4bf576.png?resizew=285)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac7dbaf678b4994d3f9464e31b87dbb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66ba239cbf38596abf32bfbedf66afd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/462caa57f8e387189476b032e10926d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79dd1b99a422eebcf5ce1568a84aae33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6b5a51e65e9b56a9970de33ead263a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d792a2aa25763e14cc2863be3887000.png)
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2021-09-04更新
|
244次组卷
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2卷引用:河北省邢台市2020-2021学年高一下学期第一次月考数学试题
5 . 如图,在
中,
是
边上一点,
是线段
上一点,且
,过点
作直线与
,
分别交于点
,
.
,
表示
.
(2)试问
是否为定值?若是,求出该定值;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](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/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f715d50ea0d9bb9af771f7fe59a8fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1fe2d802f2b37e7db198c5a3c1df9a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b680f91c4a693cc9ab2c23f2e9114ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/228f4ddbb8959f904d71259be7c6ab36.png)
(2)试问
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f575081417f85762de6f21178873854.png)
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