0.9^x-lg3/lg0.9=-lg3/lg9*0.1=-lg3/(2lg3-1)=10.37
(lg3(lg2+lg5)/lg2lg5) *[ lg5(lg3+lg9)/lg3lg9]*lg2=(lg3+2lg3)
已知lg2=0.3010,lg3=0.4771,计算:(1)lg9/2;(2)lg3.6;(3)lg根号6/2
lg2=0.3010 lg3=0.4771 lg15 =lg3+lg5 =lg3+1-lg2 =1.7781 中lg3+
lg6=lg3+lg2?
1/(1+log3 2)+1/(1+log2 3)=lg3/(lg2+lg3)+lg2/(lg2+lg3)=1解释一下这
已知lg2=a,lg3=b,lg9/50等于
2^((lg|lg3-1|)/2)为什么=2^(log底数2|lg3-1|)
(log8 9/log2 3) =(lg9/lg8)/(lg3/lg2) ,这是为什么尼
请问lg2.lg3.lg5=?
为什么LG15=LG3+1-LG2
方程lg(4^x+2)=lg2^x+lg3^x
【根号(lg3的平方-lg9+1)*(lg根号27+lg8-lg根号1000)】/(lg0.3)*(lg1.2)