名校
解题方法
1 . 已知平面向量
,
.
(1)若
,且
,求
的坐标;
(2)当
为何值时,
与
垂直;
(3)若
与
的夹角为锐角,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6569e50f43b3d8645652ecc13b62066e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fee0c015ebef334e1cce30f1592b5201.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46674852c9878a3ce082c0b7c232bbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec41eae333bbceddb0da14c824324d1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb573cc0f30d5c32cdad1510793f0e7b.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41960bbc66bdc3b28be0138f83f9de5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ecb6af2d602608a80170a8f1d0b13e.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0067ea61ac2abd75b17f906c13fd6879.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2020-09-25更新
|
726次组卷
|
4卷引用:上海市华师附天山中学2018-2019学年高二上学期学期向量单元测验卷
名校
2 . 若
是三个任意向量,则下列运算错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae951e0bb5a2a406f1572fc1e4964265.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2020-08-26更新
|
146次组卷
|
7卷引用:上海市华师附天山中学2018-2019学年高二上学期学期向量单元测验卷
3 . 已知
,
与
的夹角为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d25685ec1be1763db21b79850101b32a.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6edc919574b61a5b18c6e71ba724495.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d25685ec1be1763db21b79850101b32a.png)
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4 . 向量
在向量
上的投影为
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c2a00165a62422c537ff7dd411c54e4.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b572cbfe5491fabd42a5fdd4038a50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7372fd6f7226071ad093e6ecabbb37c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c2a00165a62422c537ff7dd411c54e4.png)
您最近一年使用:0次
2019-10-08更新
|
269次组卷
|
2卷引用:上海市华师附天山中学2018-2019学年高二上学期学期向量单元测验卷
5 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19d260707556f8a0b5306f15c0fd42a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
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6 . 已知
,点
在线段
的延长线上,且
,则点
坐标为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4a34f810854f7d6ac2b11cde263eaa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4a949c00526fddf435423272cf10f25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/600cc8523b298855bd623073af748884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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7 . 已知点
,则
同向的单位向量的坐标____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26b701e92303b0d08bcd67f9e1b4ccbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45e09c5410984d89f379f9619d073ae.png)
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8 . 在
中,
,则
面积等于____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0f279578e8703a916dcddfa6c9dc539.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
名校
9 . 将向量
=(
,
),
=(
,
),…
=(
,
)组成的系列称为向量列{
},并定义向量列{
}的前
项和
.如果一个向量列从第二项起,每一项与前一项的差都等于同一个向量,那么称这样的向量列为等差向量列.若向量列{
}是等差向量列,那么下述四个向量中,与
一定平行的向量是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28b6ac3802ee31cb30600b61beb3e827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbf785aa19bb8f014ec8b396877c2284.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78ec4ad1a2b0d42be025684a25eb9439.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3282e5fde4ae53fcb1bb072a685304c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a79b9eaa5e7ab7a1e5c512b571914dc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78ec4ad1a2b0d42be025684a25eb9439.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78ec4ad1a2b0d42be025684a25eb9439.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03ac021113d6d02d8a166d7b11e24e2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78ec4ad1a2b0d42be025684a25eb9439.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7caa19e7132a13a91640e2751d901c2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2017-05-23更新
|
826次组卷
|
6卷引用:上海市华师附天山中学2018-2019学年高二上学期学期向量单元测验卷
真题
名校
10 . 在正三角形
中,
是
上的点,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa2abc852338af84ee759178db24bd51.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.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/864ec4978545fe89d049a174890aa9aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa2abc852338af84ee759178db24bd51.png)
您最近一年使用:0次
2016-11-30更新
|
3926次组卷
|
18卷引用:上海市华师附天山中学2018-2019学年高二上学期学期向量单元测验卷
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