How to plot this equation?

[Esra Firuzi]

variables are P and r

[Walter Roberson]

... and t as well. You have a PDE.

[Learner123]

I have not used this. But, I think you can use PDE toolbox.

The link is below.

https://in.mathworks.com/help/pde/ug/equations-you-can-solve.html

Answer 1

[Benjamin Großmann]

I assume that p is a dependent variable (pressure?), r is radius (spatial), and t is time (temporal). With this assumption, you have a PDE with one spatial variable, also called 1D-PDE. To solve and/or plot this in Matlab you do not neccesseraly need the PDE toolbox.

You can solve and plot this 1D-PDE as shown in 1-D Partial Differential Equations - MATLAB & Simulink - MathWorks Deutschland and specifically Solve Single PDE - MATLAB & Simulink - MathWorks Deutschland