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1 . 平面内给定三个向量
.
(1)若
,求实数k;
(2)若
,求实数k.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a0e0cd54f9ca8a4188966dfeae3538f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1ea0345792b7e729acb3c1a0644e97f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45969e97dd451734cea4ccdc4f89b95e.png)
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2021-09-04更新
|
331次组卷
|
2卷引用:湖北省荆门市钟祥市实验中学2020-2021学年高一下学期期中数学试题
名校
解题方法
2 . 已知向量
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ce76745ad9f35ee28e30728efff3c52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06d8f26b48617c2b7b73cada12a8b452.png)
A.若![]() ![]() | B.若![]() ![]() |
C.若![]() ![]() | D.若![]() ![]() |
您最近一年使用:0次
2020-09-23更新
|
1011次组卷
|
6卷引用:湖北省荆门市龙泉中学2020-2021学年高三上学期11月月考数学试题
3 . 平面内给定三个向量
,
,
.
(1)求满足
的实数
、
;
(2)若
,求实数
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8bc34c6bf3cb48a248bcae53962b4c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d1c3ba91e1ad1d0733d174f9e40a656.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/894ef95774606e6bc083668c6b225f8f.png)
(1)求满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bec7d3ad8656ea585a99759e7491c8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e6194ba789f4f95b6de9b96bc5b1ed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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4 . 在平面直角坐标系内,已知
,
),
.
(I)若
,求证
为直角三角形.
(Ⅱ)若
,求实数λ、t的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87702ca4e2800e2063867819e6101748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69be470227445b84e0ff57e07f17a229.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9096aa9154ca32f3d5a947cc72b88fc5.png)
(I)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66884efff7400f92b530d69d029778d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/948cb5cb3919d7250ff1191e6b9052a5.png)
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