log4(42)化简

log4(42)化简 log4 化简(log4(3)+log8(3))(log3(2)+log9(2)) (log2^5+log4^0.2)(log5^2+log25^0.25)化简 log9×log4 求证：log4 3*log4 5 log4 3.6 和 log4 3.2那个大 log4^8等于8log4么 化简log3(4)*log4(5)*log5(8)*log8(9)的结果是? 化简:1/log3(x)+1/log4(x)+1/log5(x)= log4^2等于多少? 2^log4(3) log4(3x-2) log4^25等于 log4^8等于多少 2^log4^3=? log4^(-1)等于几 log4^(-1)等于几