log4 243 - log8 729=?log4 12 - log2 6=?

来源：学生作业帮编辑：搜搜做题作业网作业帮分类：数学作业时间：2024/05/09 13:45:53

=lg243/lg4-lg729/lg8
=5lg3/2lg2-6lg3/3lg2
=5lg3/2lg2-4lg3/2lg2
=lg3/lg4
=log4(3)
原式=lg12/lg4-lg6/lg2
=(2lg2+lg3)/2lg2-(lg3+lg2)/lg2
=-lg3/lg4
=log4(1/3)

log4 243 - log8 729=?log4 12 - log2 6=? log4(3)-log4(12)-log8(4) =log4(3/12)- log8( 8^(2/3) ) log8( log4 8-log8 4=? log4(log2^x)=log2(log4^x)求log2^x log4(12)与log8(27)的差和log4(27)与log2(6)的差的比值为 log2^x=log4^9 log4 2+log8 2=多少? 解方程log2(x)+2log4(x)+log8(x)=7 关于对数运算（lg5）^2+lg2·lg50=?(log2 125+log4 25+log8 5)·(log125 8+ 对数问题 log2^x=log4^9 log2(x-2)=log4(5-x) log2^x >= log4^(3x+4)