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Approximation of periodic solutions of a system of periodic linear nonhomogeneous differential equations. (English) Zbl 1099.34041
Summary: The present paper does not introduce a new approximation but it modifies a certain known method. This method for obtaining a periodic approximation of a periodic solution of a linear nonhomogeneous differential equation with periodic coefficients and periodic right-hand side is used in technical practice. However, the conditions ensuring the existence of a periodic solution may be violated and therefore the purpose of this paper is to modify the method in order that these conditions remain valid.
MSC:
34C25 Periodic solutions to ordinary differential equations
42A10 Trigonometric approximation
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References:
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