Qiandong Dong
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Solve a problem for the first time
Awarded to Qiandong Dong on 23 Nov 2022
Accept 5 answers given by other contributors
Awarded to Qiandong Dong on 09 Aug 2022
Provide your first answer ever to someone else's question
Awarded to Qiandong Dong on 09 Aug 2022
Accept 2 answers given by other contributors
Awarded to Qiandong Dong on 15 Feb 2022
Feeds
Solved
Sum of series II
What is the sum of the following sequence: Σ(2k-1)^2 for k=1...n for different n?
1 year ago
Solved
Sum of series I
What is the sum of the following sequence: Σ(2k-1) for k=1...n for different n?
1 year ago
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