解题方法
1 . (1)比较
与
的大小;
(2)已知
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdbe4f6709485516dbd81c311fc07881.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c114156a61bd0c317060c553e74dacc.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abc2bb608dcbe043ded3b74d4a8b5140.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14d2a05075997525049a368aba1c2b46.png)
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2 . 已知a>0,b>0,a+b=1,则下列等式可能成立的是( )
A.![]() | B.![]() |
C.![]() | D.![]() |
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2021-01-29更新
|
816次组卷
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5卷引用:浙江省温州市2020-2021学年高一上学期期末数学试题(A卷)
浙江省温州市2020-2021学年高一上学期期末数学试题(A卷)浙江省温州市2020-2021学年高一上学期期末数学试题(B卷)(已下线)【新东方】在线数学105高一上(已下线)【新东方】在线数学106高一上(已下线)知识点06 基本不等式-2021-2022学年高一数学同步精品课堂讲+例+测(苏教版2019必修第一册)
解题方法
3 . 已知数列
的前
项和为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0966ea90378af16f0273aeaf1c1426a4.png)
,且对任意
,都有
.
(1)求证:
;
(2)若数列
是单调递减数列,求实数
的取值范围;
(3)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0966ea90378af16f0273aeaf1c1426a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc876c76ade5694eef670e15d1b05159.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/311396d2c2b248a8e9d14d99023377f0.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d9bffb94370d31f4328b1a347bef734.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c712829d60b4ea93966a5c68c24d677.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa586a80a03853b91aa7f5e5b0de63a4.png)
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