怎么解log2^1/4

怎么解log2^1/4 解不等式log2(4x+8)>log2(2x+1) log2(x+1)=3怎么解 谁能帮我解一下：log2(x + 1) = 4 - log2(x + 1)log2(x + 1) = 4 - log2(x + 1) 解方程：log2(x+4)+log2(x-1)=1+log2(x+8) log2(3)×log2(4)=log2(7)?log2(3)×log2(4)=log2(7)吗?log2(1/49)+log2(1/16)+log2(1/27)等于多少呢?帮个忙! 对数函数 log2（x+1）=log2（x平方-1）怎么解, 解方程log2(3x)=log2(2x+1)怎么做 log2(4*-x+1)怎么等于log2(4*x+1)-2x (log2) ^2 - log5 *log20课本上 等于 （log2）^2 +(1+log2)(1-log2) = 1;（log2）^2 +(1+log2)(1-log2) 是怎么来的? log2 4+log2 (x+2)怎么算?log2 4+log2 (x+2)=log2 (4x+8) 4^log2^5怎么算 4^log2^5怎么算? 4^(log2(3)怎么求 log2*1/25怎么算 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 计算：（1）log2 (4^3*8^5);(2)log2 3+log2 6-log2 9 化简log2 1/2+log2 2/3+log2 3/4+.+log2 31/32