设f(x)在x=0处可导,且 f'(0)=1/3 又对任意的x有f(3+x)=3f(x),求f'(3)

设f(x)在x=0处可导,且对任意x.y满足f(x+y)=f(x)f(y),证明f(x)处处可导,且f'(x)=f'(0)f(x) 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f(x)在x=0处连续,且lim(x趋于0)f(x)/x存在,证明,f(x)在x=0处可导 设y=f(x)在点x0处可导,且f(x0)为最大值,求lim△x→0 f(xo+△x)-f(x0)/△x 设f(x)在点x=0处可导,且f(0)=0,f'(0)不等于0又F(x)在点x=0处亦可导.证明F[f(x)]在点x=0处可导 设f(x)在点x=0处可导,且f(0)=0,f'(0)≠0,又F(x）在点x=0处亦可导,证明：F[f(x)]在x=0处可导.要有正规过程 设f(x)在[a,b]上二阶可导,且f''(x)>0,证明:函数F(x)=(f(x)-f(a))/(x-a)在(a,b]上单调增加 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F（X）在X=0附近有定义,且满足F（X）的绝对值＜等于X*X.证明：F（X）在X=0处可导,且F‘（X）=0 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 设函数f(x)在x=0处可导,且f(0)=0,则lim(△x→0)[f(5x)]/x=? 设奇函数f(x)满足f(x+4)=f(x),且当0≤x 设函数f (x)在[0,1]上可导,且y=f (x)sin2x+f (x)cosx2,求 dy 设函数f(x)在(a,+∞ )上可导,且lim(x->+∞ )(f(x)+f'(x))=0,证明:lim(x->+∞ )f(x)=0 设f(x)在R上满足f(x)的导数=2f(x),且f(0)=1,求函数f(x) 设f(x)在R上满足f(x)的导数=2f(x),且f(0)=1,求函数f(x) 设f'(x)在(0,+∞)上单调递增,且f(x)=0,证明F(x)=f(x)/x在(0,+∞)上单调增加