设
是满足不等式
的正整数
的个数,记
.
(1)求
;
(2)设
,试比较
与
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9da4f4bf9fb72cabd7afc5a67f6ecf1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5590f290f5e3c5303d9e04e66e38b54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a66e576e813415a743f996cd39eb623.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd3bc6ddcd187c824ccddbadc96a5d6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
更新时间:2020-02-04 20:54:01
|
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解答题-问答题
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适中
(0.65)
解题方法
【推荐1】试利用函数的性质,比较
的大小:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ace74bfb716753490ebe0e740ff5baa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bae3a81b169d01ee9857d7cc4827faa.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
解题方法
【推荐2】比较
,
,
的大小:
(1)已知
,
,
,
;
(2)已知
,
,
.
![](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)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a551a88ac426439803f564a3bbee04a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70ed7fd2443ead5499d6728e85528136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc7dd1be3275c4f1832eb36a0884658c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09731bab49d67f91b152be71dc6cd776.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8078eea9aabb70b6d1e5257f91771db1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58ced3b5ea4e755de43a5059c1747e28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69c4c163a464fd139620f444de6fe2d6.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
名校
解题方法
【推荐3】若函数
.
(1)讨论函数
的奇偶性,说明理由;
(2)若函数
在
上为减函数,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b523f47461abe808c7ee036c24190c8f.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7d18350716dd782b704ec375f6525d4.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
名校
【推荐1】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe21fffdce90fa15b910d1fb296332e.png)
(1)当
时,求
的值;
(2)求不等式
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe21fffdce90fa15b910d1fb296332e.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfe7fa14aa27ae75fb80a3050a278b57.png)
(2)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
名校
解题方法
【推荐1】已知函数
.
(1)当
时,求函数
的单调区间;
(2)
,
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c91527cc956b87dd53b1eef6b46b222.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f22a4a0dd7307a1323d25331e60782d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96b743603ab1c10330622f16db78dbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f81ed7f6a4475e0fa682fa81ee747da3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题
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适中
(0.65)
解题方法
【推荐2】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edb8b674b532cd3732536ba9f3a4781f.png)
(1)求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edb8b674b532cd3732536ba9f3a4781f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次