An ODE is stiff if absolute stability requirement is much more restrictive than accuracy requirement, and we need to be careful when we choose our ODE solver. This live script starts with a simple (non-stiff) example and compares it with some stiff examples later on.
YU JU CHEN (2020). Introduction to Stiff ODEs (https://www.mathworks.com/matlabcentral/fileexchange/69429-introduction-to-stiff-odes), MATLAB Central File Exchange. Retrieved .