On a $(\omega ,c)-$periodic Solution for an Impulsive System of Second-Order Differential Equation With Product of Two Nonlinear Functions and Mixed Maxima: On a $(\omega ,c)-$periodic Solution for an Impulsive System of Second-Order Differential Equation. UJMCS 2025, 1 (1), 20-32. https://doi.org/10.56143/ujmcs.v1i1.7.