log2(2)+log5(1)-log1/3(1/27)+[3^log3(5)]^2+3^-log3(2)=?
log2(2)+log5(1)-log1/3(1/27)+[3^log3(5)]^2+3^-log3(2)=?
log2(3)+log3(5)+log3(2)=?
计算log2 6-log2 3,lg5+lg2,log5 3+log5 1/3,log3 5-log3 15
(log3 4+log3 8)(log2 3+log2 9)+(log3 根号2)(log9 7)/(log1/3 7)
(log3^4+log5^2)(log2^9+log2^根号3)
我是这样做的log2(3)*log3(5)*log5(49)*log7(64)=log2(3)*log3(5)*2log
log的计算 :log2(20)-log4(25)= log3(2)×log2(5)×log5(3)=?log2[log
证明不等式1/(log5(19))+(2/log3(19))+(3/log2(19))
证明不等式1/log5(19)+2/log3(19)+3/log2(19)
log3(2)*log5(3)*log8(5)
比较下列各数的大小:2^0.7,log5(4),log1/3(5),log3(1/4),log4(1/3),
1.log2 3*log3 4*log4 5*log5 2 2.(log4 3+log8 3)8(log3 2+log9