log(2,a)/2 怎么化成log(4,a)RT

log(2,a)/2 怎么化成log(4,a)RT logN=log(3)6+log(4)12-log(2)9是log(2)9 是以2为底的……怎么能化成2呢？ (log(4)3+log(8)3)(log(3)2+log(9)2) 怎么个思路 (log(4)3+log(8)3)(log(3)2+log(9)8) 怎么个思路 log以2为底3.6的对数怎么化成log以4为底的对数? log(4)y+log(2y)=9怎么解 等比数列a+log(2)3,a+log(4)3,a+log(8)3求公比q. log(2)3=a,则log(6)4=（ 2 log(3x)= log 4 +log(6-x)怎么求...急 log(a)2 log a 2/3 log a(2/3) (log(2)125+log(2)25+log(8)5)*(log(125)2+log(25)4+log(5)8) 4^[log(2)3+log(4)8] log(2)9log(3)4等于 log(2)9×log(3)4 log(27)32 × log(64)27+log(9)2 × log(4)根号27=?log(27)32 × log(64)27+log(9)2 × log(4)根号27=? log(8)a+log(4)b^2=5,log(8)b+log(4)a^2=7,求log(2)ab的值