文[1]证明了下述结果:设x_i∈R~+,i=1,2,……,n,且Ⅱ_(i=1)~nx_i=1,则Ⅱ_(n=1)~n(x_i+1/(x_i))≥(n+1/n)~n (1)文[2]在末尾提出了......