- Matrix of a system :
`syst2mat` - Gauss reduction of a matrix :
`ref` - Gauss-Jordan reduction:
`rref gaussjord` - Solving A*X=B :
`simult` - Step by step Gauss-Jordan reduction of a matrix :
`pivot` - Linear system solving:
`linsolve` - Finding linear recurrences :
`reverse_rsolve`

giac documentation written by Renée De Graeve and Bernard Parisse