It is a numerical method in solving two nonlinear equations of x and y. It is also called Method of Successive Substitution (MOSS) or simply Successive substitution. It plots the two functions to help the user decide which initial guesses of x and y to use. It asks the user the initial guesses for x and y and also lets the user choose what termination criterion to use, whether a specified % relative error or a number of iterations. It also checks if the system will totally converge or not and will alert the user if it would not totally converge.
Robby Ching (2020). Fixed point iteration-non linear (https://www.mathworks.com/matlabcentral/fileexchange/77645-fixed-point-iteration-non-linear), MATLAB Central File Exchange. Retrieved .
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