find [f(x+h)-f(x)]/h,h≠0,for the functions defined as follows:(a) f(x)=2x2-3x(b) f(x)=4x-3x2(c) f(x)=x^3求详细过程（不需要英语）(a) f(x)=2x^2-3x(b) f(x)=4x-3x^2(c) f(x)=x^3

given that f(x)=2x-3,find the value of f(x+h). W M J H H X F f(g(h(x))) 求导 若f''(x)存在,证明:[f(x+2h)-2f(x+h)+f(x)]/(h^2)=f''(x) f'(x)=2.则lim[f(x-h)-f(x+2h)]/2h Find and write in simplest form :Given f(x) = 1/x(a) f(f(b))(b) [f(x) - f(a)]/(x-a)(c) [f(x+h) - f(x)]/h Find and write in simplest form:Given f(x) = x² :(a) f(f(b))(b) [f(x)-f(a)]/(x-a)(c) [f(x+h)-f(x)]/h f(x+h)二阶泰勒公式f(x+h)=f(x)+(x-(x+h))f'(x)=f(x)-f'(x)h对吗? 请问lim[f(x-h)-f(x)]/-h 是等于f'(x)还是-f'(x) 设f(x),g(x),h(x)属于F[x].证明[f(x),(g(x),h(x))]=([f(x),(g(x)],[f(x),h(x)])第四题 如何证明lim[f(x+h)+f(x-h)-2f(x)]=f(x) 其中h趋向0 h(x)=max{f(x), 一道数学题（英文的）!关于(The derivatives)1.Let f(x)=2x^2-x a.Using the definition f'(x)=lim [f(x+h)-f(x)]/h,compute f'(2).h→0 b.Using the definition f'(x)=lim [f(x+h)-f(x)]/h,find f'(x).h→0 c.Does the formula in part(b)yield the corr 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. f(x)在x=a处可导, lim(h→0) [f(a+h)-f(a-2h)]/h= 设f(x)可微 求limh→0 [f(x+2h)-f(x)]/h 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 导数的定义,有式：f``(x)存在,h→0,有式：[f(x+h+h)-f(x+h)]/h 是否可以根据定义得 =f`(x+h)?如题,若f(x)二阶导数存在,h趋近与0,：[f(x+h+h)-f(x+h)]/h =f`(x+h)对吗?