计算:急,今天就要,(1)log3^24-2log3^2+log3^4.5;(2)lg7/50+lg2-lg7/500+
1个回答
(1)=log3^(24*4.5)/(2*2)=log3^27=3log3^3=3
(2)=lg(7*2*500)/(50*7*2)=lg10=1
(3)=lg(5*800)/4=lg1000=3
相关问题
计算下列各式 (Lg3+Lg7/2+Lg0.49+2lg3)+Log2(log416) {后面的log2跟log4里的2
log3 (4√27)/3 +lg25 +lg4 +7^(log7 2)
计算log2 6-log2 3,lg5+lg2,log5 3+log5 1/3,log3 5-log3 15
lg^2*5+lg21g50 log3*根号3/3+log8*4 4^log2*5+2*5^log25*4
log2 1-lg3×log3 2-lg5
用对数性质和法则计算:2log5(底数)25+3log2(底数)64-8log7(底数)1;41lg2+3lg5-lg1
数学log的计算1.(lg5)^2+lg2*lg502.(log6^2)^2+log6^3*log6^2+log6^33
计算3∧log9(lg2-1)∧2+5log25∧(lg0.5-2)∧2
求值计算lg6/70+lg7/600 +lg100+log2(5)*log5(2)
1/(1+log3 2)+1/(1+log2 3)=lg3/(lg2+lg3)+lg2/(lg2+lg3)=1解释一下这