In this video we will talk about 5th method on how to solve first order linear differential equations. This you will find in section 1.5 of Engineering Mathematics book by Erwin Kreyszig. Links of videos of previous lectures: What are differential equations, order, degree and soution of an ordinary differential equations: https://www.youtube.com/watch?v=deVxLwZhvRA ================================================================ Variable separable method: https://www.youtube.com/watch?v=zZhd7f8pvN8 ================================================================ Reduction to variable separable method: https://www.youtube.com/watch?v=o21CIMUJFio ================================================================ Exactness method: https://www.youtube.com/watch?v=EJAMToBj3yA ========================================== Integrating factor: https://www.youtube.com/watch?v=t5U7mlIzQK8