log2^x-1=0,求x

log2^x-1=0,求x log2[log2/1(log2x)]=0 求 x log4(log2^x)=log2(log4^x)求log2^x 已知函数f(x)=log2^ ( x/4 ) ×log2^ (2x) (1)解不等式f(x)>0;(2)当x∈【1,4】时,求f(x)的值域f（x）=log2（2x）×log2（x／4）＝[（log2 2）+(log2 x)] ×[(log2 x) -(log2 4)]=[1+(log2 x)] ×[(log2 x) -2]=(log2 x)² - (log2 x) -2 log2 (x+1)+log2 x=log6 求反函数y=log2(x+1) y=log2^(x+1)求反函数 求反函数:y=log2(x-1) log2(x)=-1 log2 (x + 3) + log2(x + 2) = 1log2 (x + 3) + log2(x + 2) = 1 log2^(x^log2^x)=? 求函数f(x)=2+log2^x+5/log2^x,(0 求函数f(x)=2+log2 x+5/log2 x的最值（0 已知集合A={x|y=log2(1+x)-log2(1-x)},求集合A 方程log2(2^x+1)log2[2^(x+1)+2]=2 求X。- - log2(1+x)/log2(1+y)=1.8 求y/x说错了，是x/y 已知log2(x^2)=log2(根号2-1)-log2(根号2+1),求x+1/x 求函数f(x)=(log2 4x)(log2 2x)在1/4