log2 14-2log2 7/3+log2 7-log2 18是多少
log2 SQR(7/48)+log2 12 -1/2log2 48
log2 SQR(7/48)+log2 12 -1/2log2 42
log2 3×log3 7=log2 7
log2 3乘以log2 3等于2log2
(log2 9)/(log2 8) = 2/3(log2 3)
log2 3/log2 5等于log2 3-log2 5么?
1/2log2(7/48)+log2 12-1/2log2 42
解方程log2(x+14)-log2(x+6)=3-log2(x+2)
log2(根号下7/48)+log2(12)-1/2log2(42)-1=?
Log2√(7/48) +log2 12 -(1/2)log2 42
log2 7等于多少
2^(log2^(-3))=