The final chapter of the course explores the relationship between integration and differential equations, highlighting the role of integrals in solving various types of differential equations. Students will learn how to use integration techniques to find the general and particular solutions of first-order differential equations, as well as how to apply integration to model and analyze real-world phenomena described by differential equations. This chapter will equip students with the skills to tackle problems in areas such as physics, engineering, and the life sciences, where the integration of functions is essential for understanding and predicting dynamic systems.