名校
解题方法
1 . 已知
是坐标原点,
,
(1)求向量
在
方向上的投影向量的坐标和数量投影;
(2)若
,
,
,请判断C、D、E三点是否共线,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1483e8351f585ca23025ec0c46f0a6e.png)
(1)求向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc9656d8286c4d6fa309d6ae347c89e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f605ec0729ce6d72237ad662a06862.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ba0ea537c4145d273b81ada981ee3d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4600168dd0570abb535b7c15af66ddf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b594e00f9aad4faf4907ec01f8112eb5.png)
您最近一年使用:0次
2023-04-27更新
|
797次组卷
|
2卷引用:上海市松江二中2022-2023学年高一下学期期中数学试题
名校
2 . 已知函数
.
(1)求
的最大值;
(2)在
中,内角
、
、
所对的边分别为
、
、
,若
,
、
、
成等差数列,且
,求边
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d409a37d290aa5b2e6a512e3d315b1a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42a30cdeccc312028502c30ca324d62e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3ee0da554e49ecd3b5aa91551a23766.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2021-06-04更新
|
669次组卷
|
4卷引用:2019年12月上海市松江区一模数学试题
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