1 . 已知函数
.证明:
(1)当
,不等式
恒成立;
(2)对于任意正整数
,不等式
恒成立(其中
为自然常数)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bba0b8ca5aeae32b8a8c03123ae2f65.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78c6be1629555999292abd21743d1791.png)
(2)对于任意正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f791d8d6cfdd9cfc46520c7e559c4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dcd143a57a268a5a8ef486e2a4d5c0a.png)
您最近一年使用:0次
解题方法
2 . 已知数列
为正项等比数列,满足
,
,数列
满足
.
(1)求数列
,
的通项公式;
(2)若数列
的前n项和为
,数列
满足
,证明:数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6df1038200f2d97a52c716aab6c3bcb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/021e544ea2370e0682c2a921312381a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc8f968fcf6e8e2049ce0ec3b04e4322.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2325ce6325fc3cda7674bfdc4d73f45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9928e46511e601913619a427ded84a3.png)
您最近一年使用:0次
2022-02-14更新
|
263次组卷
|
2卷引用:安徽省滁州市定远县育才学校2021-2022学年高三5月教学质量检测数学(文)试题
名校
3 . 设不等式
的解集为
.
(Ⅰ)求集合
;
(Ⅰ)若
,
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50dc6ffe52e2f03f79de711c05298bcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(Ⅰ)求集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acfc595518cf752e1c7903dfff93dbda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e0c827cca31bf1ce69b52089c5b1d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91470c93fe16abb789cdb5e3a92a6fe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad48b5732a02cd2f92fe0d7c451b659.png)
您最近一年使用:0次
2017-03-11更新
|
598次组卷
|
2卷引用:安徽省合肥一六八中学2022届高三下学期5月最后一卷文科数学试题