Lie group method for constructing integrating factors of first-order ordinary differential equations. Issue 2 (7th February 2023) - Feng, Yuqiang
ABSTRACT: This paper introduces the basic knowledge of integral factors of first-order ordinary differential equations and Lie symmetry analysis. It then discusses the principle of constructing an integral factor of the first-order ordinary differential equation by the Lie symmetric method. Finally, it presents some examples to show the process of constructing the integral factor of the first-order ordinary differential equation and finding the general solutions.