设f(x)在x=2可导,则lim=f(2+h)-f(2-h)/h= h->0

设函数f(x)在x=x0处可导,则lim(h>0)[f(x0)-f(x0-2h)]/h 设f(x)为可导函数,且lim(h→0) f(3)-f(3+h)/2h=5,则f'(3)等于? 设f(x)在x=2处可导,且f'(2)=1,则lim h→0 [ f(2+h)-f(2-h)]/h等于多少, 设f(x)在x=0处可导,则lim(h趋于0)(f(3h)-f(-h))/2h=? 设f(x)在x=a处可导,f'(x)=b 求极限lim(h-0) f(a-h)-f(a+2h)/ h 已知函数f(x)在x0可导,且lim(h→0)h/[f(x0-2h)-f(x0)]=1/4,则f‘(x0)=? f(x)在x=a处可导, lim(h→0) [f(a+h)-f(a-2h)]/h= 设f(x)在x=2处可导,f'(2)=2,则lim h→0 [f(2-3h)-f(2)]/h=? 设函数f(x)在x=1处可导,且f'(1)=2,则[lim(h→0)f(1-h)-f(1)]/h等于 设f(X)在x=x0处具有二阶导数f''(x0),试证:lim(h→0)(f(x0+h)-2f(x0)+f(x0-h)) 设函数f(x)在点x0处可导,且f'(x0)=2,则lim(h→0)[f(x0-h/2)-f(x0)]/h等于多少 函数题,若函数f(x)可导,且f(0)=f'(0)=√2,则lim(h→0)(f^2(h)-2)/h=