r\log r\geq -1/e
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Recent Referers:
  1. http://formula.s21g.com/?r%5Clog%20r%5Cgeq%20-1/e
  2. https://mkprob.hatenablog.com/entry/20120722/1342959274
  3. https://mkprob.hatenablog.com/
  4. http://formula.s21g.com/?r%5Clog%20r%5Cgeq%20-1
  5. http://mkprob.hatenablog.com/?page=1343480443