Prove for any x≥1 that
(∞∑n=0(n+x)−2)2≥2∞∑n=0(n+x)−3.
The best solution was submitted by 김기수 (KAIST 수리과학과 18학번, +4). Congratulations!
Here is the best solution of problem 2022-13.
Another solution was submitted by 김찬우 (연세대학교 수학과, +3).
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