4log25*log35根号3

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(log4 3+log8 3)(log3 2+log9 2)-log1/2 32^1/3+5^(log25 9)

最终答案:71/12再问:麻烦说下过程,谢谢!再答:过程:先看前半部分哈:(log43+log83)(log32+log92)=[lg3/(2*lg2)+lg3/(3*lg2)][lg2/lg3+lg

高中数学对数计算求值(log2 125+log4 25+log8 5)*(log125 8+log25 4+log5 2

(log2125+log425+log85)*(log1258+log254+log52)=(3*log25+log25+1/3*log25)*(log52+log52+log52)=13/3*log

2^(log4^12)-3^(log9^27)+5^(log25^1/3)等于多少?

2^(log4^12)-3^(log9^27)+5^(log25^1/3)=2^(log2(根号12))-3^(log3(根号27))+5^(log5(根号1/3)=根号12-根号27+根号(1/3)

(log5根号2*log49^81)/(log25^(1/3)*log7^立方根4)

用换底公式,原式=[(1/2)(lg2*/lg5)*(4lg3)/(2lg7)]/{[lg(1/3)/(2lg5)]*[(2/3)lg2/lg7}=(2lg2*lg3)/2lg5lg7)*[(-2lg

高一简单对数题.急log23*log35*log58 这个2是a , 3是n

利用换底公式.全部换成lg为底的.lg3/lg2*lg5/lg3*lg8/lg5=lg8/lg2=3

计算:/1-根号2/+/根号3-根号2/+/根号3-根号4/./根号2009-根号2010/

计算:/1-根号2/+/根号3-根号2/+/根号3-根号4/./根号2009-根号2010/=根号2-1+根号3-根号2+根号4-根号3+...+根号2010-根号2009=根号2010-1

log10是什么?log 75 - log 3 + log 4=log25+log3-log3+2log2=2log5+

这个顶多算是一种不规范的简写形式.不过在大多计算器上却都是这么写的,计算器上的log就是lg,估计这里也是仿照这种写法的吧.不推荐多用.

(log5根号2*log49 81)/(log25 1/3*log7 4开3次方)=?

(log5根号2*log4981)/(log251/3*log74开3次方)=(1/2log52*log79)/(1/2log51/3*1/3log74)=—3

化简:|1-根号2|+|根号2-根号3|+|根号3-根号4|+.+|根号2011-根号2012|

楼主你好:|1-根号2|=根号2-1,同理其他一样;原式=(根号2-1)+(根号3-根号2)+(根号4-根号3)+(根号5-根号4)+.+(根号2012-根号2011)消去括号为:根号2012-1

化简:|1-根号2|+|根号2-根号3|+|根号3-根号4|+.+|根号99-根号100|

原式=√2-1+√3-√2+√4-√3+…+√100-√99=√100-1=10-1=9

(log4 3+log8 3)(log3 5+log9 5)(log5 2+log25 2)=

(log23/log24+log23/log28)(log35/log33+log35/log39)(log52/log55+log52/log525)=[(5log23)/6][(3log35)/2

计算题 根号4-根号9 |根号2-根号3|+|根号3-根号4|+根号2

根号4-根号9=2-3=-1|根号2-根号3|+|根号3-根号4|+根号2=根号3-根号2+2-根号3+根号2=2

[log2 (125) +log4(25)+log8(5)][log125(8)+log25(4)+log5(2)]

将上面的对数换成常用对数,即换成以10为底的对数,计算后得13

[log2 (125) +log4(25)+log8(5)][log125(8)+log25(4)+log5(2)

=[3*log2(5)+log2(5)+1/3*log(5)]*[log5(2)+log5(2)+log5(2)]=[7/3*log2(5)]*[3log5(2)]=7*log2(5)*log5(2)

(Log2 125+log4 25+log8 5)(log5 2+log25 4+log125

首先要知道logab^n=n*logaba为底数,b为真数loga^nb=lgb/(n*lga)a^n为底数,b为真数原式=(3*lg5/lg2+lg5/lg2+1/3*lg5/lg2)*(lg2/l

2^log4底12减3^log9底27加5^log25底1/3的值

我也在做这个,做出来是-44/3(该死的预习作业啊!)原式=2^log2为底12-3^log3为底27+5^log5为底1/3=12-27+1/3不知道对不对,因为只在书上看来了换底公式...理解无能

3的log35(3为底数,5为真数)次方怎么求

这个书上有个定义n的lognm(n为底数,m为真书)次方等于m,所以这个等于5