so sánh : ( 1+ $\frac{1}{2} + \frac{1}{3}+ \frac{1}{4} + ... +\frac{1}{2013} $ ) / ( 1+ $\frac{1}{3}+\frac{1}{5}+\frac{1}{7}+...+ \frac{1}{4025}$ ) với $\frac{2013}{2014}$