Mathc:
Calculus,
Algebra linear,
In these packages, you can verify the result into GnuPlot.
Calculus Packages :
Chapter 03 : The Derivative.
c03a_.zip :
The tangent
c03b_.zip :
The normal
c03c_.zip :
Newton's method
Algebra linear :
mtrxgo.zip :
Geometric applications
vectac.zip :
Vector2d (Reflection, Orthogonal projection)
vectad.zip :
Vector2d (vertical horizontal shift)
vectae.zip :
Vector3d (Reflection, Orthogonal projection)