设函数
,已知不等式
的解集为
.
(1)求
;
(2)当
时,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b929bea3daaf6994204e73a7acd04266.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63f6ae3cee4ccdb10736d9a6ef5a30b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a2b85186925658e66d8541a5645269e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afcba84803fa109999ca5cf589a740af.png)
更新时间:2019-10-25 00:47:11
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相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐2】选修4-5:不等式选讲
已知函数
.
(Ⅰ)解不等式
;
(Ⅱ)若
,且
,求证:
.
已知函数
![](https://img.xkw.com/dksih/QBM/2015/10/27/1572268160557056/1572268166955008/STEM/aa1b831f1ade473c958c37829e283d03.png)
(Ⅰ)解不等式
![](https://img.xkw.com/dksih/QBM/2015/10/27/1572268160557056/1572268166955008/STEM/1d03c6d8e0634eb89490455fc1ed0ecb.png)
(Ⅱ)若
![](https://img.xkw.com/dksih/QBM/2015/10/27/1572268160557056/1572268166955008/STEM/0a0910dfc5004b23a15f4bbc84453aaa.png)
![](https://img.xkw.com/dksih/QBM/2015/10/27/1572268160557056/1572268166955008/STEM/686c0e976418415d82b670b79ba7e733.png)
![](https://img.xkw.com/dksih/QBM/2015/10/27/1572268160557056/1572268166955008/STEM/a797436db2cb4996b0c0597b8a323e1d.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】设a>b>0,n是正整数,An=
(an+an﹣1b+an﹣2b2+…+a2bn﹣2+ab n﹣1+bn),
.
(1)证明:A2>B2;
(2)比较An与Bn(n∈N*)的大小,并给出证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36256f0f2147b5c84029cd9616d7ed5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/342da93313c3c6750a769ea4ff948c86.png)
(1)证明:A2>B2;
(2)比较An与Bn(n∈N*)的大小,并给出证明.
您最近一年使用:0次