不等式log9(27^x-2*3^x)

不等式log9(27^x-2*3^x) 不等式log9(27^x-2*3^x) 求解这道对数不等式log9 (x) < 1/2 求x,y值.6log9^x+3log27^y=8log3^x+2log9^y=2 解方程 log9(x)-3logx^2(3)=1 log9(x-5)+log9(x=+3)=1 9是那个log的底 数学指对数方程.1.【log3（x）】平方+log9(3x)=2 log9 x+logx^2 3=1,求x.前面是底数,后面是真数 log2^3 x log9^5 x log25^8 log9 3+log9 27=怎么求~ 化简 根号 （3^(2log9（（lgx)^2)-4lg根号x-loga(1/a)) (log2(3)+log8(9))x(log3(4)+log9(8)+log3(2)) log3(x2)+log9(1/x)+3/2=0怎么解 关于LOG的计算题.log9（7+3X）=2 log9(log2(8)) = x ,求x (log2^3 +log3^5) x ( log3^5 +log9^5 ) x lg 2 ,本人对数特别差,最好带解说,(log2^3 +log5^3) x ( log3^5 +log9^5 ) x lg 2 log4(3)*log9(2)+log2(4倍根号下64) log9(32)*log64(2log4(3)*log9(2)+log2(4倍根号下64) log9(32)*log64(27)+log9(2)*log4(根27) 不等式（x-3)/(x+2)