Hello, everybody
I want to ask how to write the vibration of the 3D square plate’s equation such like Matlab’s, I don’t know the Freefem’s vibration PDE is how to write, and I confused for a long time. I would appreciate it if you can help me on the question
The function I want to achieve is the same as in Matlab. URL is Vibration of Square Plate - MATLAB & Simulink (mathworks.com)