解题方法
1 . 若平面有不共线的五点A,B,C,D,O,记
,
,
,
,满足
.
,
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14390e9b6b44472bdc7a131133ab39b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87cd14dfc0024459f9d8e594c95c5106.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e07dcf0b16163e0e0e0c0f248466ee7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/148bb713c21aa6a7b124090d763e3cfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e615309190595163291f1ef907deead.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b053159ca8d5e41edc3bb5ab25c6dc5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b012f67a250177419b93548952986c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54fc3f6eb84df9cda382c357a1606184.png)
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解题方法
2 . 已知平面向量
的夹角为
,满足
.平面向量
在
上的投影之和为2,则
的最小值是___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8ccba3b87a8a48ac3dd5f72d00bdb1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98a268b99842456d3af045077b88b9a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb573cc0f30d5c32cdad1510793f0e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8ccba3b87a8a48ac3dd5f72d00bdb1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2c8b6525cb8f97c5de980b90223f9c0.png)
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名校
解题方法
3 . 已知平面向量
,
,
满足
与
的夹角为锐角,
,
,
,且
的最小值为
,则实数
的值是_____ ,向量
的取值范围是_____ .
![](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/bb573cc0f30d5c32cdad1510793f0e7b.png)
![](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/4244dd3d11b8c8131ffecd896c12a27c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/082c6926889f84f438ea35f70bf05f02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb8ed66de4dba65ef7a2b03612185fa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c1be6dcfd317c126add9cab910543e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4624a168706aa3609025f2840ecafadb.png)
您最近一年使用:0次
2020-02-21更新
|
2546次组卷
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5卷引用:江苏省淮安市2019-2020学年高一上学期期末数学试题
江苏省淮安市2019-2020学年高一上学期期末数学试题(已下线)第6章 平面向量及其应用-2019-2020学年高一数学备战新高考新题型之双空题浙江省2022届高三下学期高考冲刺卷(二)数学试题苏教版(2019) 必修第二册 过关斩将 第9章 9.1-9.2综合拔高练辽宁省大连市大连育明高级中学2022-2023学年高一下学期期中数学试题