of nonlinear differential equations
J. Jaroš and Takaŝi
Received: November 12, 2012; Accepted: February 6, 2013
Abstract. We analyze positive solutions of the two-dimensional systems of nonlinear differential equations
in the framework of regular variation and indicate the situation in which system (A) (resp. (B) possesses decaying solutions (resp. growing solutions) with precise asymptotic behavior as $t \to \infty$.
Keywords: systems of differential equations; positive solutions; asymptotic behavior; regularly varying functions.
AMS Subject classification: Primary: 34C11, 26A12
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ISSN 0862-9544 (Printed edition)
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