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
(log2^3 +log3^5) x ( log3^5 +log9^5 ) x lg 2 ,
(log2(3)+log8(9))x(log3(4)+log9(8)+log3(2))
不等式|3-2X|
不等式2x-3
不等式x^2-x-5>3x
log12 (根号x+四次根号x)=1/2log9 x
设函数F(X)=logaX(a>0,且a不等于1)满足F(27)=3,则F-1(log9 2)的值
不等式|(x+3)/x|>(x+3)/x,不等式(x²-9)/(x-2)>0
若log2^3×log3^4×log4^x=log9^3 ,求x
解不等式x*x+1/2x(3-2x)