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IMO Shortlist
1969 IMO Shortlist
35
35
Part of
1969 IMO Shortlist
Problems
(1)
sigma 1/n^3 <5/4
Source:
10/3/2010
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(HUN 2)
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Prove that
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n
3
<
5
4
1+\frac{1}{2^3}+\frac{1}{3^3}+\cdots+\frac{1}{n^3}<\frac{5}{4}
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1
<
4
5
Inequality
series summation
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