log4(20)=log4(5)+1,log3(12)= log3(4)+1,很明显log3(4)与log4(5)比较大小即可.
log4(5)/log3(4)=log4(5)*log4(3)
log4(20)与log3(12)比较大小 log3(4)与log4(5)比较大小?越简明越好!
log4(20)=log4(5)+1,log3(12)= log3(4)+1,很明显log3(4)与log4(5)比较大小即可.
log4(5)/log3(4)=log4(5)*log4(3)