1.(1/4)^(log4)^(1/16)等于多少2.lg^3(2)+3lg2lg(5)+lg^3(5)等于多少3.若3^a=2,则log3(8）-2log3(6)用a表示的式子是?4.已知lga=2.4310,lgb=1.4310,则b/a等于?5.27^[3+log3(2)]=?6.5^[log5(100)-3]=?7.81^[0.5log3(5)]=?

(1/4)^log4(3) log4^8+log4^2-(1/4)^0 等于多少? 2007*log5(1)+log4(27)*log3(4) 求证log3(4)=1/log4(3) log4^(-1)等于几 log4^(-1)等于几 log4 1/8 log4(4^-x+1/4^x+1)为什么等于log4(4^x) ：若log3(4)*log4(8)*log8(m)=log4(16),则m等于( )A 1/2 B 9 C 18 D 27答案是B但为什么? 解方程log4 x+1/log4 x=10/3 解方程 log4 (3x-1)=log4 (x-1)+log4 (3+x) log4(3x-1)-log4(3+x)=log4(x-1) log√3^9+log9^27+(1/4)log4^1/16 《高一数学》求log9^27+(1/4)^[log4^(1/16)]的值 log√3^9+log9^27+(1/4)log4^1/16 求值：3^(log3 (25) )+(-C(5,4)^(log2 1)+16^(log4(2sin(π/2))= 对数方程 log2(x+1)-log4(x+4)=1 计算:(1/4)^log4^1/3-lg25-lg4-log9^27