1 . 已知函数
.
(1)证明:
是偶函数;
(2)设函数
,
,是否存在实数
,使得
的最小值为
?若存在,求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866bb509e1e15881a6f2651e015fc0fe.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51346a3ced6384ea453ac1f4f0854d0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eef3a1198de433b651a0fd1e9a629422.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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19-20高一·全国·课后作业
2 . 设
,
,
均为正数,且
,求证:
.
![](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/24f1a77df4f43746a2e3fa334503ae0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8ecd243f470dfad138cfb1fb9b6347f.png)
您最近一年使用:0次
名校
3 . 已知函数
.
(1)证明:函数
在区间
上单调递增;
(2)已知
,试比较三个数a,b,c的大小,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50d1a15a360fb1f18366a7a6a34e7833.png)
(1)证明:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7334919736e5ed881f691e4ca738b4ce.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08f69763a4a5da1d08128a49dffcb440.png)
您最近一年使用:0次
2022-01-15更新
|
934次组卷
|
6卷引用:广东省七区2021-2022学年高一上学期期末数学试题
名校
4 . 设函数
,
.
(1)求
的单调性与值域;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5758825f136bae945133874a70dd027b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25274b110e4061882212a96b5f97f77.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55eb666cc1d853a6ee24a1d19467e807.png)
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20-21高一·江苏·课后作业
5 . 设a,b均为不等于1的正数,利用对数的换底公式,证明:
(1)
;
(2)
(
,
,
).
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c29f0abb27fb384bd21aaf1e771d19c.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f095b5fe07c9a01c3ae6502814b03439.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2725a89d93c791f7a0098f4964587905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad5a523e020e21797c0f83c2b6772588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59b2400d72b1e3145cb21ba719d8a968.png)
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20-21高一·江苏·课后作业
6 . 证明:
,其中
,
,
,
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de037b169136d835516891005282de81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2a891d21bb2c7a11304beaab5054074.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cec12441802f71e803efaf2c62ee588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f940e491269e04ab4680ee10714ba88c.png)
您最近一年使用:0次
21-22高一·全国·课后作业
7 . 若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7560558dc26adced6c408a2676e19d3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95fe8eea58fded5be142b07d2c695040.png)
您最近一年使用:0次
20-21高一·江苏·课后作业
8 . 已知
,
,
,
.
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1353fecc9cb8b23406534eed37b4f48d.png)
__________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85b9237e0cb71a3b7c1ee3dd87eefcbf.png)
__________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa7981e3621e92f70b24ae9ef2f1bfcf.png)
__________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d29c5884e25447be6c0b976a2b9cbb4.png)
__________ ,一般地,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/251d4c8a06fcf86ae7444def9bbcfa84.png)
__________ ,
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2a891d21bb2c7a11304beaab5054074.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d285a4c557fc9748105b62ccd94b7859.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1353fecc9cb8b23406534eed37b4f48d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85b9237e0cb71a3b7c1ee3dd87eefcbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa7981e3621e92f70b24ae9ef2f1bfcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d29c5884e25447be6c0b976a2b9cbb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/251d4c8a06fcf86ae7444def9bbcfa84.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66e763009996df0a623943c143387dd0.png)
您最近一年使用:0次
20-21高一·江苏·课后作业
9 . 设
,
,
,
,
,证明:
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2480f87a11c4cd450bc9454ea7276722.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2a891d21bb2c7a11304beaab5054074.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad5a523e020e21797c0f83c2b6772588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892f3c1a1c932881193cfce6d7ab1f54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a27908ae1534b60b5f0eb8edf2d42edc.png)
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2021-10-31更新
|
181次组卷
|
5卷引用:4.2 对数
(已下线)4.2 对数(已下线)4.2 对数-2022-2023学年高一数学《基础·重点·难点 》全面题型高分突破(苏教版2019必修第一册)(已下线)第4章 指数与对数章末题型归纳总结 (1)-【帮课堂】(苏教版2019必修第一册)苏教版(2019)必修第一册课本习题 习题4.2【导学案】2.1 对数的运算性质课前预习-北师大版2019必修第一册第四章对数运算与对数函数
20-21高一·江苏·课后作业
解题方法
10 . 证明:函数
(
)是奇函数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97d44c9fbbc4f7810ba9525fb5d0f577.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57b88e53e6ca674b4cb92ba78dddf989.png)
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