名校
解题方法
1 . 水滴型潜艇的线型特点是首部呈圆钝的纺锤形,潜艇的横剖面几乎都为圆截面,艇身从中部开始向后逐渐变细,尾部呈尖尾状,小刘利用几何作图软件画出了水滴的形状(如图),由线段
和优弧
围成,其中
连线竖直、
与圆弧相切,已知“水滴”的水平宽度与竖直高度之比为
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d297eab7380f6a28ec010218d9ab4ba1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10a27dc396251a4453094d19baa79816.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/23/176e695a-ee5d-4746-9e3c-305664651900.png?resizew=145)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-05-21更新
|
373次组卷
|
2卷引用:重庆市2023届高三临门一卷(二) 数学试题
2 . 公元前6世纪,古希腊的毕达哥拉斯学派在研究正五边形和正十边形的作图时,发现了黄金分割比的为0.618,这一数值恰好等于
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/225b19b35d1a1722e9f079e0bfefe7c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4605b8fd890dfe17a881255c1089fd95.png)
A.![]() | B.![]() | C.![]() | D.1 |
您最近一年使用:0次
2023-08-01更新
|
320次组卷
|
2卷引用:重庆市江北区巴川量子学校2023-2024学年高一上学期期末数学试题
解题方法
3 . 如图,已知直线
,
是
,
之间的一定点并且点
到
,
的距离分别为
,
,
是直线
上一动点,作
,且使
与直线
交于点
.设
.
面积
关于角
的函数解析式
;
(2)画出上述函数的图象;并根据图象求
的最小值;
(3)证明函数
的图象关于
对称.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cdb9d8425d73a68731f30e0c0e22260.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80b53eab97158937f92039c1e133b0f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f285174fbf90a9742de57c1e53224cff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/822ba132ca9dd0d4a050659aef3c9b26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c499d3ef329f85e59fd72dec6f453bbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fd7229922fbb3ce09dada883f74fbb1.png)
(2)画出上述函数的图象;并根据图象求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fd7229922fbb3ce09dada883f74fbb1.png)
(3)证明函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fd7229922fbb3ce09dada883f74fbb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4120436d6ff0c58109473edc068257c3.png)
您最近一年使用:0次