名校
解题方法
1 . 已知
均为正实数.
(1)设
,
,求证:
;
(2)若
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/333de134fb62d12d1b62f59bab55fbfb.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b74110bc818c2f5a53d63451c5251eb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/436a2732e9c9d5ce401c448cd9de80e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f663a586008ecff29abc4cba5948830.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0d957381a6902b4d7192f13043aa6a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/660ca2c4e0dc6e567c74066ea95aaeb6.png)
您最近一年使用:0次
2022-10-19更新
|
268次组卷
|
2卷引用:江苏省徐州市沛县歌风中学2022-2023学年高一上学期阶段性检测(一)数学试题
名校
解题方法
2 . 证明下列不等式
(1)求证:
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fbbe8678e8336495fe1383b2178ecd8.png)
(2)已知
都是正数,求证:
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f70e0db0174a2c05b28fb6d0c2508778.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fbbe8678e8336495fe1383b2178ecd8.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a14c388e1e2e5a2ff1ccf6caffbee0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f14305fe9ecbe4aa54341b2c7574db.png)
您最近一年使用:0次
名校
3 . (1)求证:已知
,
,
,
,
,并指出等号成立的条件;
(2)求证:对任意的
,关于
的两个方程
与
至少有一个方程有实数根(反证法证明);
(3)求证:使得不等式
对一切实数
,
,
都成立的充要条件是
,
,
且
.
![](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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/941b8c37cb9b036a5d7faa7eac01fa6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/878f834c03d26711f64bb3abe20e5488.png)
(2)求证:对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ace8f8a779c8f039407b7cae737d7212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/751ee06608e9b40cd42cc4b48165e37c.png)
(3)求证:使得不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e774028355336f9a47e4e5194f3e7b06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fff8a8a07e9fab2efc5be33f1339112f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0ad8d91c1ce139fbf2382a6e8a8f674.png)
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解题方法
4 . (1)已知
,求函数
的最大值;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3697ec54c1e6516bb71f5b2431d1870.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d4324640dea9a6267c8ed105823e513.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df837775edd0bc9adeb8560acb1c0ef6.png)
您最近一年使用:0次
名校
解题方法
5 . 已知
糖水中有
糖(
),往糖水中加入
糖(
),(假设全部溶解)糖水更甜了.
(1)请将这个事实表示为一个不等式,并证明这个不等式.
(2)利用(1)的结论证明命题:“若在
中a、b、c分别为角A、B、C所对的边长,则
”
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4352384d696d4bea86914323f4561d0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26db2ba1a20483f21f4551ee4f024f31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d100c22435a23e017cfe6f535379d3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2839495501bff1253bde58c09a3fa1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
(1)请将这个事实表示为一个不等式,并证明这个不等式.
(2)利用(1)的结论证明命题:“若在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2eaa2602d1e16c1be46993bf86562a7.png)
您最近一年使用:0次
2023-10-16更新
|
243次组卷
|
7卷引用:江苏省苏州高新区第一中学教育集团2022-2023学年高一上学期10月调研数学试题
江苏省苏州高新区第一中学教育集团2022-2023学年高一上学期10月调研数学试题广东省惠州市第一中学2023-2024学年高一上学期10月第一次阶段考数学试题(已下线)2.1等式性质与不等式性质(第1课时)(导学案)-【上好课】(已下线)2.1等式性质与不等式性质(第2课时)(分层作业)-【上好课】(已下线)2.1等式性质与不等式性质(第2课时)(导学案)-【上好课】(已下线)2.1等式性质与不等式性质(第1课时)(分层作业)-【上好课】(已下线)【一题多变】 糖水溶液 抽象提炼
名校
解题方法
6 . 求解或证明下列各组中两个代数式的大小:
(1)已知
均为正实数,比较
与
﹔
(2)已知
,证明:
.
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe2b05214c8b22507f0c36b110593d0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a977414a3ad65caf5eee28e0cd175de.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08e8fee0c9fe95497e8c093c8e43d8c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c983849aee8e09ac232bdf28f4cfdf3.png)
您最近一年使用:0次
2023-07-26更新
|
602次组卷
|
2卷引用:宁夏中卫市中宁县第一中学2022-2023学年高二上学期10月月考数学试题
名校
解题方法
7 . (1)设
,试比较
和
的大小.
(2)求证:当
时,不等式
成立,当且仅当
等号成立,据此求
的最大值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d229cbec798c9c278a9b5979cb38247.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69f23db69bdc68433d2db9590fe60550.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40901c6ecbde629a554f58db9c0cc677.png)
(2)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8674e0c29d69918736b83bdc8288dc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb2e31608320e989afeeed9a7a8482d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f22fec5a381ae8aca93d876e54c79de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/938babc8d8adcabe08f196ef63a36e10.png)
您最近一年使用:0次
名校
解题方法
8 . (1)比较
与
的大小;
(2)已知
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc1533d9629fc6274cf960b6a95fc19a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b8d16a4f028929e670ec3c44d35c5c1.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5842f47b99932df68efbb64eb847e956.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411100df59e7a9dc8d4ad77d497b6fa9.png)
您最近一年使用:0次
2023-02-25更新
|
725次组卷
|
6卷引用:内蒙古乌兰浩特市第四中学2022-2023学年高一上学期第一次月考数学试题
名校
解题方法
9 . (1)已知
,
,
.求证:
;
(2)已知
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a98ddef21b1a9f6928b42ed0c7d773a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5c9edb7b17b557cf53ab0f6feec0fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d04cc3054e76defab1f1ea8ba839eced.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/236475cfcea8a2ff53d42bb485ecbaf4.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a98ddef21b1a9f6928b42ed0c7d773a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5696693286fa0875d4edde1ddff8e9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a66665bbb67fe7e0e18235b5e2ef2d2.png)
您最近一年使用:0次
解题方法
10 . (1)已知
,求证:
;
(2)已知
,且
,比较
与
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca6db1782631b7890d374cf46ca61739.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7570c77bd375f4dfdffee64fce8d1a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/268dc5d671b54541475cb9e2c90a76f4.png)
您最近一年使用:0次