Tổng quát bài toán basel:
CMR : $1+\dfrac{1}{2^{2}}+\dfrac{1}{2^{3}}+........+\dfrac{1}{n^{2}} <\dfrac{\pi ^{2}}{6}$
Edited by banhbaocua1, 24-11-2011 - 13:03.
Edited by banhbaocua1, 24-11-2011 - 13:03.
Edited by nguyenta98, 24-11-2011 - 16:13.
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