Tìm n:
$\frac{1}{2}\times 2nC1 - \frac{2}{3}\times 2nC2 + \frac{3}{4}\times2nC3 - \frac{4}{5}\times2n4 +...- \frac{2n}{2n+1}\times2nC2n = \frac{1}{2015}$
Also tagged with one or more of these keywords: nhị thức niu-tơn
1 user(s) are reading this topic
0 members, 1 guests, 0 anonymous users
