Tongji fifth edition of advanced mathematics, the third question, the second topic is what to choose B?
From the mean value theorem: f (1)-(0) = f' (ξ) (1-0) = f' (ξ) (0
F'' (x)>0 = & gtf'(x) monotonically increases,
So f' (0) < f' (ξ) < f ' ( 1)
Option b