log2加log5等于多少

log2/log5等于多少没底?你题写错了吧。是lg2/lg5吧？补充问题在回答问题有错误

log25乘log54等于多少log2(5)*log5(4)=log2(5)*2log5(2)=2log2(5)*log5(4)=log2(5)*2log5(2)=2.4217825476303约等于2

log2^5乘以log5^2等于多少?=lg5/lg2xlg2/lg5=1log2^5=lg5/lg2log5^2=lg2/lg5所以log2^5乘以log5^2=1log2^5乘以log5^2log2^5=lg5/lg2log5^2=lg

2log5(25)+3log2(64)-8ln1等于多少2log5(25)+3log2(64)-8ln1=2log5(5)^2+3log2(2)^6-8ln1=2*2+3*6-0=4+18=222log5(25)=2log5(5^2)=2*

2log525＋3log264等于多少2log525＋3log264=2log55^2+3log22^6=2*2+3*6=222log55^2+3log22^6=4log55+18log22=4+18=22log525=2log264=62

log2加log5怎么算?lg2+lg5=lg2×5=lg10=1;如果本题有什么不明白可以追问,log(2)+log(5)=lg10=1

5^log5(2)-4^log2(3)+3^log27(8)等于多少?(1)5^log5(2)-4^log2(3)+3^log27(8)等于多少?(2)开更号[lg2(1/3)-4lg(3)+4+lg(6)-2^(-1)]等于多少?5^lo

log5(lg5)等于多少Log[5,lg5]=lg(lg5)/lg5=lg(0.6990)/0.6990=-0.1555/0.6990=-0.22250.5434471800817

lg8*log2(5)*log5(4)得多少?=lg8*（lg5/lg2）*lg4/lg5=（lg8）*2=（3lg2）*2=6lg2首先：lg8=3lg2，log2(5)=lg5/lg2，log5(4)=lg4/lg5=2lg2/lg5所

log225乘log34乘log59等于多少不用计算器log225*log34*log59运用换底公式log(a)(b)=log(n)(b)/log(n)（a）原式=(ln25/ln2)*(ln4/ln3)*(ln9/ln5)运用对数的基本

2log510+log50.25等于多少?2追问：麻烦能写点过程么、?回答：2log510=log5100所以原式=log5(100*0.25)=log55^2=2log55=2

log5底1等于多少0

25^log5(6)等于多少25^log5(6)=（5×5）^log5(6)=5^log5(6)×5^log5(6)=6×6=36a^loga(b)=b对数恒等式

log5157/3等于多少0.471

2乘log5的底数以10的对数加log5的底数以0.25的对数等于多少2*log5.10+log5.o.25=log5.10+log5.10+log5.0.25=log5.10*10*0.25=log5.25=5

(log2)^2-log5*log20课本上等于（log2）^2+(1+log2)(1-log2)=1;（log2）^2+(1+log2)(1-log2)是怎么来的?【【注：好像你的题目中的对数是,以10为底的常用对数.】】lg5=lg(1

log2的25次×log5的8次等于log2的25次×log5的8次等于=log2(5^2)*log5(2^3)=2log2(5)*3log5(2)=6log2(5)*log5(2)=6*1=6

2log5^25–3log2^64等于?2log5(25)-3log2(64)=2log5(5^2)-3log2(2^6)=2*2log5(5)-3*6log2(2)=4*1-18*1=-14有什么不懂请追问,我会为您详细解答,2log5(

设log57=a,（5为底数）,log25=b,（2为底数）,则log27等于多少,（2为底数）ab.

log2的平方加log2乘log5可以写成什么.还有为什么底数是多少?