Videos explaining the code:
https://www.youtube.com/playlist?list=PLR7GqPO_6lTjaxRsB5OyuLEW114xOAy0h
Credit: Muhammed Al-barham (https://www.mathworks.com/matlabcentral/profile/authors/10833898)

GUI Numerical Solver includes the following :
- Roots Finding
-> Bisection
-> False-Position
-> Simple Fixed Point
-> Newton-Raphson Method (Multivariable included)
-> Secant Method (Multivariable included)
- Linear System Solver
-> Gauss Elimination
-> Gauss Jordan
-> LU Dolittle Decomposition
-> LU Crout Decomposition
-> Gauss Seidel
-> Jacobi Iterative
-> Over-Relaxation Method
- Curve Fitting
-> Regression

Features :
-> can specify number of decimals
-> can specify initial values
-> can specify number of decimal certainty as a termination condition
-> include more than one termination conditions that user can specify
-> shows steps of solution and table for iterative process
-> and much more