lg(1/4)-lg2(5) 2log5(10)+log5(0.25) 2log2(25)-3log2(64) log2
计算:(lg2)2+3lg5+lg5(1+lg2)+lg8+log2(5)log5(4)
2log5(25)-3log2(64)=?
计算log2 6-log2 3,lg5+lg2,log5 3+log5 1/3,log3 5-log3 15
(log3^4+log5^2)(log2^9+log2^根号3)
求下列各式的值 1)log2 6+log2 3 2)lg5+lg2 3)log5 3+log5 三分之一 4)log3
(1/log2 10) + (1/log5 10) =lg2 + lg5
log的计算 :log2(20)-log4(25)= log3(2)×log2(5)×log5(3)=?log2[log
数学(log5 √2*log7 9)/(log5 1/3 *log7 3√4)+log2( √(3+√5)- log√(
(log2^5+log4^0.2)(log5^2+log25^0.25)化简
我是这样做的log2(3)*log3(5)*log5(49)*log7(64)=log2(3)*log3(5)*2log
log2 25*log3 4 *log5 9
log2 5乘log5 4等于多少