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
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
f(x)在x=a处可导, lim(h→0) [f(a+h)-f(a-2h)]/h=
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
设函数f(x)在点x处可导,试求h→0 lim f(x+h)-f(x-h)/2h的值
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.
设函数f(x)在x=x0处可导,则lim(h>0)[f(x0)-f(x0-2h)]/h
f(x)在x_0处可导,求lim h→0 f(x_0+h)-f(x_0-h)/5h 的值
设f'(x) = 3^(1/2) ,求 lim(h→0) [f(x+mh) - f(x - nh)] / h ,(m ,
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,
举例说明lim(h→0)f(xo+h)-f(xo-h)\2h=f'(xo)存在,推导不出函数f(x)在x=xo
设f(x)具有二阶导数f''(x),证明f''(x)=lim(f(x+h)-2f(x)+f(x-h))/h^2
设函数f(x)在点x0处可导,求lim(h→0)(f(x0+h)-f(x0-h))/2h的值