Limit Cycle Problem for Quadratic System with some Applications of a Class I

  • Ali Bakur Barsham ALmurad
  • Elamin Mohammed Saeed Ali
Keywords: Quadratic system, Limit cycle, Quadratic polynomials


This paper is part of a wider study limit cycle problems of a class and planar system; we study the existence of limit cycle for polynomial planar system. In this paper, we present a proof of a result on the existence of limit cycle of the Quadratic System: 


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