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jdhao

If you want to get answers to your question quickly. You need to think hard what your question really is and say it clearly.If you do not show your effort in solving your question, you will probably never get an answer. Always tries to give a minimal, complete and verifiable example.

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  • Shenzhen, China
  • jdhao
  • jdhao.github.io
  • Member for 4 years, 3 months
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  • Last seen Nov 21 '20 at 9:58

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8 How to compute $S_{2016}=\sum\limits_{k=1}^{2016}\left(\sum\limits_{n=k}^{2016}\frac1n\right)^2+\sum\limits_{k=1}^{2016}\frac1k$? Sep 16 '17
2 a confusion about the matrix chain rule Oct 15 '17

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