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2.2.1对数与对数的运算.pdf

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1、第1页第二章基本初等函数课题：2.2.1 对数与对数的运算设计人：宫玲玲审核人：向坤、张自强班级：姓名：问题生成评价单一、对数的概念1、对数的概念一般地，如果ax=N(a0,且 a1)，那么数 x 叫做以 _为底_的对数(logarithm),记作 x=_，其中 a 叫做对数的 _，N叫做_.以 10 为底数的对数叫做常用对数(common logarithm),并把log10N记为_.另外，在科学技术中常使用以无理数e=2.71828 为底数的对数，以 e 为底的对数称为自然对数(natural logarithm),并把logeN记为_.2、对数的性质根据对数的概念，对数logaN(a0,

2、且 a1)具有以下性质：（1）_ 没有对数，即 N0.（2）1 的对数等于 _，即loga1=_.（3）底的对数等于 _，即logaa=_.二、对数的运算1、基本性质若 a0，且 a1，N0，则（1）logaNa=_；（2）logaab=_.第2页2、对数的运算性质如果 a0，且 a1，M0，N0，那么：（1）loga(MN)=_；（2）logaMN=_；（3）logaMn=_(nR).3、对数的换底公式对数的换底公式：logloglogcbcNNb（b0，且 b1；c0，且 c1；N0）.变形公式一：loglog1abbag变形公式二：loglognmNNmMMn文档编码:CG10I6A8B

3、3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY

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7、L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档

8、编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG1

9、0I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1第3页问题解决评价单典例 1求下列各式中的x 值：（1）3log 272x；（2）22log3x；（3）25log(log)0 x.变式 1 求下列各式中的 x 值：（1）5log3x；（2）lo

10、gx216=3；（3）log3(lgx)=1.典例 2若 a0，且 a1，xy0，nN*，则下列各式：其中式子成立的个数为（）A、3 B、4 C、5 D、5 文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6

11、A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2

12、 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3

13、M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9

14、 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H1

15、0J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H

16、1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1第4页变式

17、 2 若 a0，且 a1，xy0，则下列式子成立的是（）log()loglogaaaxyxy；lgloglgaxxa；loglognnaaxx.A、B、C、D、典例 3变式 3 求下列各式的值：文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H1

18、0J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H

19、1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:

20、CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6

21、A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2

22、 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3

23、M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9

24、 ZS9H10J4L7H1第5页典例 4已知 log189=a,18b=5,求 log3645.变式 4 已知 log147=a,log145=b,用 a,b 表示 log3528.典例 5 解下列关于 x 的方程：（1）22log(21)log(3);xx（2）255log(21)log(2)xx；（3）23(lg)lg100 xx.变式 5 解下列关于 x 的方程：（1）lg1lg(1)xx；（2）40.2540.25log(3)log(3)log(1)log(21)xxxx.问题拓展评价单文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG1

25、0I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B

26、3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY

27、5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H

28、2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS

29、9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4

30、L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档

31、编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1第6页一、选择题1、2log2 的值为（）A、2B、2C、12D、122、对于 a0，且 a1，下列说法中正确的是（）若 M=N，则 logaM=logaN；若 logaM=logaN,则 M=N；若 logaM2=logaN2，则 M=N；若 M=N，则 logaM

32、2=logaN2.A、B、C、D、3、下列计算正确的是（）A、222log 6log 3log 3B、22log 6log 31 C、3log 93D、233log(4)2log(4)4、已知2log193x，则 x=()A、12B、22C、2 D、25、已知 ln 2=a,ln 3=b,那么 log32 用含 a,b 的代数式表示为（）A、abB、abC、ab D、a+b 6、若lglgxyt，则33lg()lg()22xy=（）A、3t B、32tC、t D、2t二、填空题7、483(log 3log 3)log 2_.8、已知234(0)9aa，则23loga=_.9、已知 2a=5b=

33、10，则11ab=_.10、方程 lgx+lg(x+3)=1的解是 x=_.三、解答题11、化简下列各式：（1）222(lg2)lg2 lg5(lg2)lg21；文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10

34、I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3

35、P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5

36、J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2

37、K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9

38、H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L

39、7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1第7页

40、（2）248525125(log 125log 25log 5)(log2log4log8).12、用 lgx,lgy,lgz,lg(x+y),lg(x-y)表示下列各式：（1）lg(xy2z3)；（2）lg(x2-y2)13、（1）已知 log89=m,log35=n,求 log512；（2）若 lga,lgb 是方程 2x2-4x+1=0 的两个实根，求2lg()(lg)aabb的值.【未解决问题】自我评价同伴评价学科长评价小组长评价学术助理评价1、完成单子情况2、主动帮助同伴3、主动展讲4、主动补充与质疑5、纪律情况文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10

41、J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1

42、文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:C

43、G10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A

44、8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2

45、HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M

46、1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1文档编码:CG10I6A8B3P2 HY5J3M1H2K9 ZS9H10J4L7H1

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