名校
解题方法
1 . (1)已知
克糖水中含有
克糖(
),再添加
克糖
)(假设全部溶解),糖水变甜了.这一事实可以表示为不等式
,证明这个不等式成立.
(2)已知
都是正数,求证
;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d100c22435a23e017cfe6f535379d3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87a3a82d6b1b6ed16c30367f038c16bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac2bdea081bcd1c706cc82f906f226ce.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a14c388e1e2e5a2ff1ccf6caffbee0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/308b2921746b1ee3f499e220c371ca96.png)
您最近一年使用:0次
2023-11-07更新
|
102次组卷
|
2卷引用:新疆乌鲁木齐市实验学校2023-2024学年高一上学期第一次月考数学试题
2 . (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)
您最近一年使用:0次
解题方法
3 . (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)
您最近一年使用:0次
名校
4 . (1)已知
,求
的最小值.
(2)已知
是不全相等的实数,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec634253b37d452172cfa39030753184.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dcb6ea431bc38718c156d3866f83bf1.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c665c2b8d8a803ab64196bffe3042314.png)
您最近一年使用:0次
名校
解题方法
5 . 设函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe2ab5c4e0e536807a39ed9a85acf0c3.png)
(1)若不等式
的解集为
,求
的值;
(2)若
,且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe2ab5c4e0e536807a39ed9a85acf0c3.png)
(1)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b666663ce3537a634a3b427b418eb62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27cf818dd484cc4cebd40a5f28eb8e9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2684b72f9f38f5046c8ecd4280b7b14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d87cd4403487962c38c8707ba3ab3fa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57e1cda660d1176d8c93210d038cb0fc.png)
您最近一年使用:0次
2023-07-16更新
|
1097次组卷
|
4卷引用:新疆维吾尔自治区普通高中2022-2023学年高二7月学业水平考试数学试题
名校
解题方法
6 .
(1)当
时,解关于
的不等式
;
(2)已知
,
,当
时,证明:
,并指出取等号条件.
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afeeecba13d1b662ef717fa141a46ec4.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5558c083d34cbb0a58d3ce1dc6f5778e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/032dbf0e1d506eeb4b9883cf7066cfcf.png)
您最近一年使用:0次
7 . 已知
,
.
(1)若
,求
的最小值;
(2)若
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bc681ecd12d2815ce8b946de0b0a33e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e69ecbb9286004321fd71148fd1f856.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a7dbc702617c765a573961953cc0901.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85a4adf2be5840d8a75a52fca9be6d2a.png)
您最近一年使用:0次
名校
解题方法
8 . 已知
是正实数.
(1)若
,证明:
;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81c5a174835da9408e5ea533d2617736.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc084b244a1f4a237d9f84f222946b8e.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eefb6ab060d0a77a4e5f5659315000d.png)
您最近一年使用:0次
解题方法
9 . 设a,b,c均为正数,且
,证明:
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/751e274e9107d780c39ba9c49d6daefb.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b09fc94ae8293ad1de55d2990502588e.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ff32f65e461bf423c27e9553b75e52.png)
您最近一年使用:0次
2022-05-22更新
|
991次组卷
|
4卷引用:新疆乌鲁木齐地区2022届高三下学期第三次质量监测数学(理)试题(问卷)
名校
10 . (1)设
,
,求证:
;
(2)已知
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1a66b19a1bc76f5d1b9a9c43b1656e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be97cd1c7111b654d87d8fbb63b6a84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2129e8ec4f374ae282fb9785461a64c7.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09568754a8422dd90e9cb040b4c70544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f352f97803f55b21c0dd569caa4956f9.png)
您最近一年使用:0次
2021-09-08更新
|
416次组卷
|
2卷引用:新疆皮山县高级中学2020-2021学年高二5月月考数学(文)试题