log2 100+log1/2 25等于?图传不上来.

log2 100+log1/2 25等于?图传不上来. log1/2 (x^2)大于等于log1/2 (3x-2),求f(x)=(log2 (x/4))*(log2 (x/2))求最大值最小值 对数运算题一道log2(12)+log1/2(3倍根号2）等于多少 解不等式log1/2(x+2)《2log2 1/x [log2(x)]^2+(a+1/a)log1/2(x)+1 8log2^X-logX^2=log1/2^X 解方程 log2(x-3)-log1/2(x)=2 比较对数大小 log1/2^0.2和log2^0.2 log1/2(log2(3)=多少高一的数学.. log1/3 3 =2log2 x 求x Log1/2（x+1）+log2（1/（6-x））>log1/2(12) 解不等式log1/2^(x+1) +log2^[(1/(6-x)] 大于log1/2^12 log2[log1/2(log2x)]=log3[log1/3(log3y)]=0 比较XY的大小急, log1/2四等于多少 log1/2三等于多少 log2 50-2log2 5 等于多少? 已知-3小于等于log1/2 x大于等于-1/2,求函数f(x)=(log2 x/2)(log2 x/4)的最大值和最小值以及相应x的值 log2 5 x log2 5等于log2 25还是什么?