1、导数定义：⊿x→0时,极限存在,lim [f(x+⊿x)-f(x)]/⊿x= f’(x)2、 lim [loga(A+⊿x)-loga(A)]/⊿x= lim [loga(A+⊿x)/A]/⊿x= lim [loga(1+⊿x/A)]/⊿x =lim A/⊿x ×[loga(1+⊿x/A)]×1/ A 转换为指数= lim [lo...