This paragraph is designed to distinguish three types of equation, which are different both mathematically (properties of solutions, methods of demonstration) and physically.
First, let's look at the case of p.d.e.s dependent on two real variables.
Definition 1.
The partial differential equation (E) given in the introduction :
You do not have access to this resource.
Exclusive to subscribers. 97% yet to be discovered!
This offer includes interactive articles. Their quizzes highlight the key information to remember and validate their acquisition: from reader to player, you can enrich your knowledge.
You can easily identify them thanks to this pictogram: