log3 7·log2 9·log49 a=log4 1/2,则a=

log3 7·log2 9·log49 a=log4 1/2,则a= log3^7乘以log2^9乘以log49^2= log3^7乘以log2^9乘以log49^2= 若log3(7)·log2(9)·log49(a)=log4(1/2),则a的值等于 若log3(7)·log2(9)·log49(a)=log4(1/2),则a的值等于没有过程没关系, 若log3(7)*log2(9)*log49(a)=log4(1/2),则a=? log2^9*log3^8 2道高一对数基础计算题~help,1.已知loga^5=-1/2.log5^b=-1/2.lg2=0.3,求lgb/a2.设log3^7log2^9log49^m=log4^1/2,求实数m的值 (log3 4+log3 8)(log2 3+log2 9)+(log3 根号2)(log9 7)/(log1/3 7)(log三次根号4 8) 比大小.log2 7 和log3 7 log2 9乘以log3 4等于多少 怎么算log2 9乘log3 2 log2 9×log3 2怎么算? Log2013[Log2(log3的9次方)_ log2^3*log3^7*log7^8 log2 3×log3 7=log2 7这个算法对吗 (log3^4+log5^2)(log2^9+log2^根号3) log2 3 · log3 4 ·log4 5 ·log5 2 前面的是底数