“…Subsequently, these equations have been frequently used in technical fields of scientific and engineering. Volterra integro-differential equations (VIDEs), which are known as a famous mathematical model in the related literature, and delay differential equations/systems have been seen in many practical fields such as electrical circuit, glass forming process, biology, physics, chemistry, control theory, economics (see, [1][2][3][4][5][6][7][8][9][10][11][12][13]). Besides, many researchers have done studies on the qualitative behaviors of solutions and some numerical solutions of these equations in recent years.…”