Question

见下图,不好打,

Answer 1

f(x)+f{(x-1)/x}=2x——（1）f{(x-1)/x}+f{[(x-1)/x-1]/[(x-1)/x]}=2*(x-1)/x即：f{(x-1)/x}+f[-1/(x-1)]=2*(x-1)/x——（2）f[-1/(x-1)]+f{[-1/(x-1)-1]/[-1/(x-1)]}=2*[-1/(x-1)]即：f[-1/(x-1)]+f(x)=2*[-1/(x-1)...