名校
1 . 设
为锐角,且
,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3557b1ffe4be133ccd4e643226de0ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
A.![]() | B.![]() | C.1 | D.![]() |
您最近一年使用:0次
2023-02-07更新
|
532次组卷
|
3卷引用:上海市金山中学2021-2022学年高一下学期3月月考数学试题
名校
解题方法
2 . 利用和差化积和积化和差公式完成下面的问题:已知
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51da9e5d60586f1e09c497b420ea933b.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e24a12de9a13f6f9f9b0a896b7555c65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/487a0769ade1e25a23caaa6f8c8e874a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51da9e5d60586f1e09c497b420ea933b.png)
您最近一年使用:0次
名校
解题方法
3 . 已知函数
.若存在
使得
是严格增函数,那么称
为“缓降函数”.(本题可以利用以下事实:当
时,
.)
(1)判断以下函数是否是“缓降函数”①
②
(无需写出理由);
(2)求证:
是“缓降函数”;
(3)已知
,求证:
是“缓降函数”的充要条件是
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd06c79ae6fc666bf28fef89a45bad2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60b9ff3088cf75d2c0723095b849155a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d49ec515fb1fdc93ca4dda443326ad5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/640461197eaf70c0ebe1eb89daf383c1.png)
(1)判断以下函数是否是“缓降函数”①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a018432a8de4afa287edb8fe44893c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac11a6a57971621e4aa220349bc6fba1.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb9c4d40c9d00ed13cf8c56984c5b8b4.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be466586da8810ccfd811c59a747adb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82944a9643cc5f97b2b7cc7c6a901c44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
您最近一年使用:0次
名校
解题方法
4 . 已知
,且
,则乘积
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4694050ea5b7ab600e9152d421340bea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ad65f3142683ba29ef089bb95be9021.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee92cd6ebf695c511af651fde4600e5f.png)
您最近一年使用:0次
2022-04-21更新
|
512次组卷
|
2卷引用:上海市上海中学2021-2022学年高一下学期期中数学试题