已知
、
.
(1)求
;
(2)若
与
平行,求实数
值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e481e72c0b5b6268f18e2eb566368d77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4424f7a5fde275cc3bba39b242f61154.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daef91a6dc58061db290e3264716e0c7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40436543cc51f42b5b5d93e55a407ce4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a06c8eae3652486cf9e416ce3a8ffc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
22-23高一下·上海长宁·期末 查看更多[2]
更新时间:2023-07-08 23:37:01
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相似题推荐
解答题-问答题
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【推荐1】已知
为两个不共线向量,
,
,
,
.
(1)若
,求实数
;
(2)若
,且
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ae0d7b3266f32b6a916b6237b6b838.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf342e77c56e55a35bb1151bc215a3a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0f359357b4e55014d6377d5c6e759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/901a3c18e342fbf595517af61acee854.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6faf60be7e54aacf10289640a02f9a8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9cf4f106eb46bb42526f8ff87a5df0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0105285d408e25320cd33170e91a11e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c39d1d88189726ae99c309644fca3494.png)
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解答题-证明题
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较易
(0.85)
名校
解题方法
【推荐2】设
,
是不共线的两个向量.
(1)若
,
,
,求证:A,B,D三点共线;
(2)若
与
共线,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c08ebbac3d6784d6d3565192f36f91a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e5f8509784fc0cc4134e41f8dcc0a60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1af26762e8309eb14f2bcab0954f7165.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52395f0262abbf2a4b1a823b4b65caae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a126bb16b6ab8644a8e8d33f6909224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
解答题-证明题
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较易
(0.85)
【推荐1】设向量
,
,
.
(1)求
;
(2)若
与
平行,求
的值;
(3)求证:
与
垂直;
(4)求
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/010632a752a68ced11aaf8ac2f3be311.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fe274c1abd217bba785a193f9a2ded1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccbac0b7aae1810196fb8b2ac5a2861b.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2def9368c3513ae1afb361b56dd06b2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/437dc907211c5934f938d869f6b19e93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ed521b8d2a27df838534e3b787b3dd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed492f7b29166ba5c1f0023b05a439c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b20f69af6870bada879cddd7f6794d24.png)
(4)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/770b200e9fc16b3da9d38e37bb17d63b.png)
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解题方法
【推荐2】如图,已知点O为平面直角坐标系的原点,点A的坐标为(4,3),点B的坐标为(-1,6),作
,垂足为点D.
,
,
;
(2)求
;
(3)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a67bb733403810fa80c0d758e537645.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c388f1f7160d3397610633dfde015fa0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85a82596d3e0eea2ea14448e3ede29c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad71547a1a45cc7b11d6ecde59884c7.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a711bf44ed64556c72fbb0e7f42c27f.png)
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【推荐3】已知点
,
,
,求:
(1)
的值;
(2)
的大小;
(3)点A到直线BC的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98b2cc0d2f6d3eee9a33db83e0c0830d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb28194b2e3fde6d395a61e677bc7161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f2b2e17012dad782bd12795cd27488.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6da9ea780ba5e54f3be57b4a7bb12b1.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
(3)点A到直线BC的距离.
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