20-21高一·全国·课后作业
1 . 求下列各式的值:
(1)
;
(2)
;
(3)
;
(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c806fb25495ec94cd303871cec4c36d.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2945785f9e33199199ea51162f98f0e7.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afd464ce5ecec3b48b047f000532f4fd.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2256f958c600703fa7f85c6ce56cee21.png)
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20-21高一·全国·课后作业
2 . 把下列指数式写成对数式,对数式写成指数式:
(1)
;
(2)
;
(3)
;
(4)
;
(5)
;
(6)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feae878a430a1b23774127547d842cb6.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22080f3910da3c072c286f7fa4cf7452.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dccdcb494b5d5466e46246c1f80b3147.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ecfa27ffa534a8968b4f7dfa71211e.png)
(5)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/539124eaf91cfea8ef34a401940221d3.png)
(6)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3930d8bc99580b23ba9ea2c91ec12b8a.png)
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2021-11-21更新
|
635次组卷
|
3卷引用:4.3 对数
20-21高一·全国·课后作业
解题方法
3 . 求下列函数的定义域:
(1)
;
(2)
;
(3)
;
(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52b0307b46affb054468ea243eb3e6b5.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/139765ae7cf168bc3142d232bf62e7dd.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02b10eb26c7c0fd45f8569f5f0f1895c.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/334af51704cde1c14c5b63e68f18cd2b.png)
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20-21高一·江苏·课后作业
名校
4 . 求下列各式的值:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be18d585ee2da88fec856e8f8c22d845.png)
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4efb2f6a264a012f1aee60803facb794.png)
(3)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81319038a0c5499954bffaa53c1f006c.png)
(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be18d585ee2da88fec856e8f8c22d845.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4efb2f6a264a012f1aee60803facb794.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81319038a0c5499954bffaa53c1f006c.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd4fb87b402737abf12ae606d0454c7b.png)
您最近一年使用:0次
2021-11-12更新
|
471次组卷
|
4卷引用:4.2 对数
(已下线)4.2 对数新疆喀什第二中学2021-2022学年高一上学期期中考试数学试题苏教版(2019)必修第一册课本习题4.2 对数(已下线)【第一练】4.3.1对数的概念+4.3.2对数的运算【第一练】上好三课,做好三套题,高中数学素养晋级之路
20-21高二·全国·课后作业
5 . 某制糖厂第一年制糖5万吨.如果平均每年的产量比上一年增加10%,那么从第一年起,约几年内可使总产量达到30万吨(保留到个位)?(参考数据:
.)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcea73811a794f4e4ef9f140e76784a9.png)
您最近一年使用:0次
20-21高一·江苏·课后作业
6 . 有些家用电器(如冰箱等)使用了氟化物,氟化物的释放破坏了大气上层的臭氧层,使臭氧含量Q呈指数函数型变化,在氟化物排放量维持某种水平时,具有关系式
,其中
是臭氧的初始量.
(1)随时间t的增加,臭氧的含量是增加还是减少?
(2)试估计多少年以后将会有一半的臭氧消失.(用计算器计算)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a194fe1d644cb8815bd39968a95748d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b1698b9a76d725f9a254b9798d926fd.png)
(1)随时间t的增加,臭氧的含量是增加还是减少?
(2)试估计多少年以后将会有一半的臭氧消失.(用计算器计算)
您最近一年使用:0次
2021-10-31更新
|
331次组卷
|
4卷引用:6.2 指数函数
20-21高一·江苏·课后作业
7 . (1)设
,
,试用a,b表示
和
;
(2)设
,
,试用a,b表示
和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b8b211452c4c592ca14ec5efd317eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06cbfb9234a06407a1a3a3d2e536b57b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c73ce07f773d1c728b51293b68d1a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d617b8321ee2dec557170edeb57878be.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b8b211452c4c592ca14ec5efd317eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f86216410881a852581be887299e114.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c73ce07f773d1c728b51293b68d1a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d617b8321ee2dec557170edeb57878be.png)
您最近一年使用:0次
20-21高一·江苏·课后作业
8 . 要测定古物的年代,可以用放射性碳法:在动植物的体内都含有微量的放射性
.动植物死亡后,停止了新陈代谢,
不再产生,且原有的
会自动衰变.经过5730年(
的半衰期),它的残余量只有原始量的一半.经过科学测定,若
的原始含量为1,则经过x年后的残留量为
.用放射性碳法,测得我国辽东半岛普兰店附近的泥炭中发掘出的古莲子中
的残余量占原来的87.9%,试推算古莲子的生活年代.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c595ab427191084b4c94aec0ab67fb2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c595ab427191084b4c94aec0ab67fb2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c595ab427191084b4c94aec0ab67fb2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c595ab427191084b4c94aec0ab67fb2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c595ab427191084b4c94aec0ab67fb2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ea09e20205296565e0fb236bca27d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c595ab427191084b4c94aec0ab67fb2d.png)
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20-21高一·江苏·课后作业
9 . 利用计算器,求下列各式的值(结果保留4位小数):
(1)
; (2)
;(3)
; (4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ec24d9c55b9c463dad38d0a1a1ed8fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/621905c786e2daf5bf34af889cb92628.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69cd2ea61c934f7fa25b5ec6a959d143.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0e9f5a7780391796886a5325675c7b5.png)
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20-21高一·江苏·课后作业
10 . 将下列对数式改写成指数式:
(1)
; (2)
;(3)
; (4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e48f8e11d038e898b6cd8332cb00d58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5845d1dd41089aa79239269401591ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48795e9d965d15bdf0122996742c8b0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f88fe24b844beca349ae0d91ae7a3500.png)
您最近一年使用:0次