若f'(x)=-3,则lim (h趋向0)时f(x+h)-f(x-3h)/h=?
若函数f(x)在点x=a处可导,则lim(h→0)[f(a+4h)-f(a-2h)]/3h=?
若函数f(x)在点x=a处可导,则lim(h→0)[(f(x)-f(x+3h))/h等于(),求过程
若f(x)有二阶导数,证明f''(x)=lim(h→0)f(x+h)-2f(x)+f(x-h)/h^2.
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=2处可导,f'(2)=2,则lim h→0 [f(2-3h)-f(2)]/h=?
f(x)在x=a处可导, lim(h→0) [f(a+h)-f(a-2h)]/h=
设f'(x) = 3^(1/2) ,求 lim(h→0) [f(x+mh) - f(x - nh)] / h ,(m ,
设函数f(x)在x=x0处可导,则lim(h>0)[f(x0)-f(x0-2h)]/h
f(x)在x处二阶可导,求lim{[f(x+h)-2f(x)+f(x-h)]/h^2},h趋向于0
1.函数f(x)在x=a处可导 ,则lim h->a [f(a+3h)-f(a-h)]/2h=?
函数f(x)在x=a处可导,则Lim h→a [f(a+3h)-f(a-h)]/2h=?
设f(x)为可导函数,且lim(h→0) f(3)-f(3+h)/2h=5,则f'(3)等于?