This package provides some commands (in French) to perform calculations on small (2x2 or 3x3 or 4x4) linear systems, with xint or pyluatex: \DetMatrice or \DetMatricePY to diplay the determinant of a matrix (with formatting options); \MatriceInverse or \MatriceInversePY to display the invers of a matrix (with formatting options) ; \SolutionSysteme or \SolutionSystemePY to display the solution of a linear system (with formatting options); …