An exact expression of positive periodic solution for a first-order singular equation

An exact expression of positive periodic solution for a first-order singular equation

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Abstract The main Wither Strap purpose of this paper is to obtain an exact expression of the positive periodic solution for a first-order differential equation with attractive and repulsive singularities.Moreover, we prove the existence of at least one positive periodic solution for this 3 Piece Outdoor Sofa equation with an indefinite singularity by applications of topological degree theorem, and give the upper and lower bounds of the positive periodic solution.