解题方法
1 . 已知向量
,
.
(1)求
以及
;
(2)当实数
为何值时,向量
与向量
共线?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80d769ab21af5365d3c00dc617375ce4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22249dd883332a917ec68eaf7dd5ea23.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a06c8eae3652486cf9e416ce3a8ffc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c39d1d88189726ae99c309644fca3494.png)
(2)当实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40436543cc51f42b5b5d93e55a407ce4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a06c8eae3652486cf9e416ce3a8ffc9.png)
您最近一年使用:0次
20-21高一下·浙江·期末
解题方法
2 . 已知向量
.
(Ⅰ)若向量
与
共线,求t的值;
(Ⅱ)若
,且
与
垂直,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd087bbc59c94594f367020357f635ba.png)
(Ⅰ)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d79a0699c36fa6f2de4d9a68d2e133f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cafe3a0b379a1e7f6c47acbb58b084eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次