已知log2(x^2)=log2(根号2-1)-log2(根号2+1),求x+1/x

已知log2(x^2)=log2(根号2-1)-log2(根号2+1),求x+1/x log2 (x + 3) + log2(x + 2) = 1log2 (x + 3) + log2(x + 2) = 1 log2x^2=log2(根号2-1)-log2(根号2+1),求x+1/x log2(x – 2 ) + 2 = log2(5)log2(x – 2 ) + 2 = log2(5) log2(x – 2 ) + 2 = log2(5)log2(x – 2 ) + 2 = log2(5) log2 4+log2 (x+2)怎么算?log2 4+log2 (x+2)=log2 (4x+8) 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 已知函数f(x)=log2(2-x)+log2(2+x)求f(x)的定义域 请问y=log2[x+根号(1+x^2)] 奇偶性 log2(2x)*log2(x)=2 x=? f(x)=log2(x/8)*log2(2/x) 已知x满足根号2≦x≦8求函数f(x)=(log2,x-2)log2,2/x的最大值和最小值 函数 y=根号tanx+log2(2-x)x定义域函数 y=根号tanx+log2(2-x)x定义域 log2(根号下7/48)+log2(12)-1/2log2(42)-1=? log2根号7/48+log2^12-1/2log2^42-1= 已知函数y=(log2 x/8)(log2 x/4) (2= 已知函数y=(log2 x/8)(log2 x/4) (2= 已知根号2≤x≤8,求函数f（x）=（log2 x/2)(log2 4/x)的最大值和最小值