函数f(x)=1/4x^2-In(1-x)怎么求导

问题描述:

函数f(x)=1/4x^2-In(1-x)怎么求导
要详细我数学不好

f'(x)=1/4(x^2)'-(ln(1-x))'=1/4*2x-1/(1-x)(1-x)'=1/2x+1/(1-x)