20-21高一·江苏·课后作业
1 . 当x是什么实数时,函数
的值是:
(1)0?
(2)正数?
(3)负数?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f72ee05ed093a9d1dd3d96bf9782dc88.png)
(1)0?
(2)正数?
(3)负数?
您最近一年使用:0次
20-21高一·江苏·课后作业
2 . 不等式
的解集为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cd32afd5b02f571a454d8c1287a6fbb.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
20-21高一·江苏·课后作业
解题方法
3 . 已知
g糖水中含有
g糖(
),若再添加
g糖(
)溶解在其中,则糖水变得更甜(即糖水中含糖浓度变大).试根据这个事实写出a,b,m所满足的不等关系,并给予证明.
![](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/58b140e221ddf537b8964fff8557cca0.png)
您最近一年使用:0次
20-21高一·江苏·课后作业
解题方法
4 . 已知
,求证:
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/753bc7b46730ab08df9ee4488ce34986.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ae5f93f5e7ba309f529af75cb76dfcc.png)
您最近一年使用:0次
20-21高一·江苏·课后作业
5 . 已知
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca24341509c05e672999202f2df0ebaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f508c534fe704f84b14b740740ceb73.png)
您最近一年使用:0次
20-21高一·江苏·课后作业
6 . 设x,y为正数,比较
与
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f0b84ee4ed90face0993d4f4dda379.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2696d72704a8274a995063527e89d38f.png)
您最近一年使用:0次
20-21高一·江苏·课后作业
解题方法
7 . 已知
,比较
,
,
,
的大小关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c74e6705efea256eb04ab4ede3a717d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf35027e76f8ea593f82023973d4aba3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/addb5619e7d6c00ba2bd2e706dd827e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a89e3c30f6e4d4c5db4378b05d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a476588acbf41d798cc234a52fa21a8.png)
您最近一年使用:0次
20-21高一·江苏·课后作业
8 . 证明下面的结论:
(1)如果
,
,且
,那么
;
(2)如果
,
,那么
;
(3)如果
,
,那么
;
(4)如果
,
,
,那么
.
(1)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44cbc322861846709c08c7f1da746848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cec12441802f71e803efaf2c62ee588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27f50ce6b511e6b928796e048fc7fa5c.png)
(2)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca24341509c05e672999202f2df0ebaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0e271b6e63206285461a7552d11efd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27f50ce6b511e6b928796e048fc7fa5c.png)
(3)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d89ab55ffb93cc48f077b542dbd25aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86f39f99ebfadbe8d8b7dd2b08476a25.png)
(4)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d89ab55ffb93cc48f077b542dbd25aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35f93dcad997a94b38329bd3cfb48962.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b401efefaa63cfdb2129fbe399e0a8f.png)
您最近一年使用:0次
20-21高一·江苏·课后作业
解题方法
9 . 已知
,比较
与
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f0e9c04402a0ffdaa25c3e3c82c7dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aafedced579321bd0c286c9199e2e0ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/967dcd74f8fe443f9765b88d7ad47056.png)
您最近一年使用:0次
20-21高一·江苏·课后作业
解题方法
10 . 已知
,比较
与
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2958030ec9d7543dda1f529593a915e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5c09ed5474dcf42421fce143de2711e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8dcbe0878a649ce2c86c4c612dc5007.png)
您最近一年使用:0次