log2(12)-log23
解不等式log2(2x-1)<log23 (g后面的2是下面的小2,2是后面的是x平方
3+log2-7/1+log2-7=3+log3-7×log2-3/1+log3-7×log23 前者是怎么变成后者的?
(log23+log89)(log34+log98+log32)=______.
log2(√1/48)+log2 12-1/2log2 (24)-1/3
Log2√(7/48) +log2 12 -(1/2)log2 42
运用对数的换底公式化简log23×log34×log45×log52:;(log43+log83)(log32+log9
log2 SQR(7/48)+log2 12 -1/2log2 48
log2 SQR(7/48)+log2 12 -1/2log2 42
log2 12÷log2 3+log3 9 -log27 64 (空格前面是底数后面是对数)
解不等式:|log2(x-1)|+log2(5-x)
log2(1001)等于多少
log2(根号下7/48)+log2(12)-1/2log2(42)-1=?