设函数f(X)在x=0点的某邻域内可导,f(0)=0 f'(0)=1/2 ,求lim(x->0)f(2x)/x

问题描述:

设函数f(X)在x=0点的某邻域内可导,f(0)=0 f'(0)=1/2 ,求lim(x->0)f(2x)/x