logo.jpg rejtrix

Solutions for Systems of Linear Equations

By Rondall E. Jones, Ph.D.



For free packaged matrix solvers (for Windows PCs), which read and write Excel-compatible files, click here. 


For our C++ software library for dense systems of equations, click here.

The file matrix.h includes code for algorithms up to a robust least-squares solution for any shape system.

The file rejtrix.h extends matrix.h to have solvers which include regularization and constraints.


For tutorials on matrix problems and special topics, click here.


For licensing, or references, or to contact the author, click here.


















 “Ron Jones”  “Rondall Jones”  “Ronald Jones” “Ron Jones math”

linear equations”  “matrix problem”  “least squares”  “matrix solver”  overdetermined  “underdetermined”

“constrained linear equations”  “nonnegative solution”  “regularized”  “regularization”  “automatic regularization”  autoreg

mathematics  “free download”  “C++ software”  “C++ library”