名校
解题方法
1 . 已知
,
是以
为圆心,
为半径的圆周上的任意两点,且满足
,设平面向量
与
的夹角为
(
),则平面向量
在
方向上的投影的取值范围是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede359ccb522009b4fae3df0623054f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/098a3e7d1f1890863b7483a98b618119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49edf1756e0f0e468210f7ab0fad4bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588414d07bcedbf1e7d46d0d028e269d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5773af927ab0caa208eef1adf9e87aee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4568f87bbf306a87fcbb054ec4fc3ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588414d07bcedbf1e7d46d0d028e269d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab7b0fa63c2cb0f75e1567039892d9a0.png)
您最近一年使用:0次
名校
解题方法
2 . 已知正
的边长为
,内切圆圆心为
,点
满足
.
(1)求证:
为定值;
(2)把三个实数
,
,
的最小值记为
,b,c},若
,求
的取值范围;
(3)若
,
,求当
取最大值时,
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41322821ce31416fdac8dd6e0aa41c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8180faf978008d2bc7704cb69c3c40.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304010e1253e0fc6f7578c210be321f9.png)
(2)把三个实数
![](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/9c4ac0a523138c4597301dbd6ed3abb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bb980e0614df97e69a89948d3b21ccb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c20fc69bb272fc609c2a7c95f888373c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc95236ed98064b97d67045706a21906.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4e7bf9200b351a259ddfc6c0266129d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d380dea30f490babb2aef4edc49afc6.png)
您最近一年使用:0次
2021-08-26更新
|
1627次组卷
|
4卷引用:浙江省温州中学2020-2021学年高一下学期期中数学试题