This lecture covers the concepts of Laplace and Fourier transformations, focusing on their inversion formulas. The instructor discusses the properties of these transformations, including their applications in solving differential equations. The lecture begins with the introduction of the Laplace transform and its inversion formula, emphasizing the importance of understanding the relationship between functions and their transforms. The instructor provides examples to illustrate how to apply these formulas effectively. The discussion then transitions to the Fourier transform, detailing its inversion and the conditions under which it can be applied. The lecture highlights the significance of these transformations in various mathematical contexts, particularly in the analysis of linear systems and signal processing. Throughout the lecture, the instructor engages with the audience, encouraging questions and clarifications to ensure a comprehensive understanding of the material. The session concludes with a summary of key points and the relevance of these transformations in advanced mathematical studies.