A_t=A_t^{(1)}-A_t^{(2)}
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Recent Referers:
  1. http://formula.s21g.com/?A_t%3DA_t%5E%7B(1)%7D-A_t%5E%7B(...
  2. https://mkprob.hatenablog.com/entry/20120612/1339497600
  3. http://formula.s21g.com/
  4. http://d.hatena.ne.jp/mkprob/20120612
  5. http://d.hatena.ne.jp/mkprob/?of=28