The Real Solutions of Functional Equation $f^{[m]}=1/f$
Received:March 31, 2006  Revised:October 12, 2006
Key Words: iterate   iterative equation   $k$-circuit   Babbage equation   piecewise continuous.  
Fund Project:the Youth Foundation of the Educational Department of Sichuan Province (No.072B042).
Author NameAffiliation
CHEN Li Department of Mathematics, Sichuan University, Sichuan 610064, China 
SHI Yong Guo Department of Mathematics, Neijiang Teachers College, Sichuan 641112, China 
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Abstract:
      The authors study the functional equation $f^{[m]}=1/f$ and analyze the features of its piecewise continuous solutions. All the piecewise continuous real solutions are obtained constructively. The results generalize the ones in [2]. Moreover, the conclusion is drawn that there is no circuit iterative roots for those functions not satisfying Babbage equation.
Citation:
DOI:10.3770/j.issn:1000-341X.2008.02.011
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