It is an iterative approach of numerical integration for functions, adapted from the classical Trapezoidal rule. It asks the user what termination criterion to employ, either a %relative error or number of iterations. A 1st iteration has a local truncation error of O(h^4); 2nd iteration an error of O(h^6); 3rd iteration an error of O(h^8), and so on.
Robby Ching (2020). Romberg Integration (https://www.mathworks.com/matlabcentral/fileexchange/77666-romberg-integration), MATLAB Central File Exchange. Retrieved .
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