已知平面直角坐标系中,点O为原点,
,
,
.
(1)若
,求实数m的值;
(2)若A,B,C三点共线,求实数m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ca979687ffb2214e747525635a6912c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e396c83557ec8b2b4b12d97d6738819.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82c1c09948b93a90c426bde746cbb414.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1f83be0f457f3bc6cca3e37ddf05a8b.png)
(2)若A,B,C三点共线,求实数m的值.
更新时间:2022-05-03 19:04:39
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【推荐2】已知
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(1)
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(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
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(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
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解题方法
【推荐1】若直线l经过原点且与向量
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【推荐2】已知
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【推荐3】已知
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d2807ecc81d36bee4048fa4d570895d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32cde768af0b6520211805e04decb739.png)
(1)当m为何值时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd876a2ed79c64bacc3e64b8ee92735e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40436543cc51f42b5b5d93e55a407ce4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b83c5803cc8c05849028a57c4bd4ee72.png)
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