Partial differential equations are mathematical equations that describe how a function of several variables changes with respect to space and time. They are widely used to model physical phenomena in science and engineering, such as heat transfer, fluid dynamics, electromagnetism, quantum mechanics, and relativity. In this article, we will review the basic theory and methods of solving partial differential equations, using the book Elements of Partial Differential Equations by Ian Sneddon as a guide. We will also discuss some applications of partial differential equations in various fields and show how you can download a free PDF version of the book.
elements of partial differential equations by ian sneddon pdf free download