A:It’s; to turn dow
B:It’s; turning u
C:There’s; turning off
D:There’s; to turn off
若函数f(x)为定义在R上的奇函数.且满足f(3)=6,当x>0时f′(x)>2,则不等式f(x)﹣2x<0的解集为____.
试求:3种醇的分子式.