\varphi_{\beta} (x)
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Recent Referers:
  1. http://formula.s21g.com/?%5Cvarphi_%7B%5Cbeta%7D%20(x)
  2. https://mkprob.hatenablog.com/entry/20120107/1325941401
  3. https://mkprob.hatenablog.com/
  4. http://formula.s21g.com/
  5. http://mkprob.hatenablog.com/