解题方法
1 . (1)对任意三个正实数
,
,
,求证:
,当且仅当
时等号成立;
(2)若
,
,证明:
.
![](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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ef3052cd1be7641eb559c5d7ed142cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44acc0ee22dc4b7750e8be825e7c1355.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0e271b6e63206285461a7552d11efd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/529dde2b67c291382ccc6ebbc8aa4c63.png)
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名校
解题方法
2 . (1)已知
,求证
;
(2)已知
,函数
的最小值为M,实数
,且
,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5842f47b99932df68efbb64eb847e956.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411100df59e7a9dc8d4ad77d497b6fa9.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c49ac7e0f2b4d74032a37865ca10b09f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eb713e5fc677848147f3045c1058cc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b5d514b065f6e6368cc0a02d23a55ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8474e2337da8a29965f88dc1bc8e6ca.png)
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3 . (1)证明:若
,
,则
.
(2)利用基本不等式证明:已知
都是正数,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70410f095a6d5b4b66ece2ad7bf1e461.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d5556dd86322752a457b3a6ba979c80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cd8c11384de6e399d7cff57f7824b69.png)
(2)利用基本不等式证明:已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb750904ec9f5877dac7638e45e45936.png)
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名校
4 . 已知实数
,
,
满足
.
(1)若
,求证:
;
(2)若
,
,求
的最小值.
![](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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e56f4504e0f80fd031c8b5f41832e03.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca24341509c05e672999202f2df0ebaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af20caf9cd92faf3282c0486c94544cc.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6612fe41088a24a2765b531890a4add3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56667aabbe787eb1c3189d487d203e22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
您最近一年使用:0次
2022-03-25更新
|
631次组卷
|
4卷引用:新疆塔城市第三中学2022-2023学年高一上学期期中数学试题
解题方法
5 . (1)比较
与
的大小
(2)已知
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4faeb75371f0549063b9969548eab22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23c79c36076414b89656de72ed37d52c.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d49fd886423d557a699bc3d82f45a3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/125415eb6733489cdc96ee48eb88aee7.png)
您最近一年使用:0次
解题方法
6 . (1)求证:
.
(2)已知
为任意实数,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceed227c026ff8d94237c63ace92cf78.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/840ab5202c0dd51fb0d9aa14a500fd45.png)
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