f(x)=(x-1)ln(x-1)的单调减区间
问题描述:
f(x)=(x-1)ln(x-1)的单调减区间
答
定义域为x>1
f'(x)=ln(x-1)+1
令f'(x)
f(x)=(x-1)ln(x-1)的单调减区间
定义域为x>1
f'(x)=ln(x-1)+1
令f'(x)