设f(x)在[0,1]二阶可导,且f(x)在(0,1)上最大值为1/4,|f ''(x)|

设f(x)在[0,1]二阶可导,且f(x)在(0,1)上最大值为1/4,|f ''(x)| 设f(x)在[a,b]二阶可导,且f''(x) 设函数f(x)在闭区间[0,1]上可导,且f(0)×f(1) 设函数f(x)在[0,1]上可导,且0 设函数f(x)在[0,1]上可导,且0 设f(x)在[1,e]上可导,且0 设f(x)在[0,1]上可积,且a 设f (x)在x=0处可导,且f (0)=0,求证：lim(x→∞)f (tx)-f (x)/x=(t-1)f' (0) 设函数f(x)在(-∞,+∞)可导,且满足f(0)=1,f'(x)=f(x),证明f(x)=e^x 设f(x)在[0,1]上有二阶连续导数,且满足f(1)=f(0)及|f''(x)| 设函数f(x)在(-1,1)有定义且满足x≤f(x)≤x²+x证明f'(0)存在且f'(0)=1 f(x)在(-∞,+∞) 二阶可导,f(x)/x=1,且f''(x)>0,证明f(x)>=x 设f(x)在[0,1]上具有二阶连续导数,且|f''(x)| 一道高数证明题,设函数f(x)在[0,1]上可导,且|f'(x)| 设f(x)在(0,1)具有二阶导数,且|f(x)| 设f(x)在[0,1]上连续,且f(x) 高等数学问题：设f(x)在[0,1]上连续,且f(x) 设函数f (x)在[0,1]上可导,且y=f (x)sin2x+f (x)cosx2,求 dy