hello, I present my work : a freeware, (Language C, GnuPlot).

Linear algebra : (fractions, 30 packages).

http://www.geocities.com/xhungab/package.html
The purpose of this work is to verify with numeric applications, some

properties of the linear algebra.

addm, subm, multm, powm, smultm, transpose, det, minor, mminor, cofactor,

mcofactor, adjoint, inverse, gauss, gaussjordan, LU,

norm,distance,innerproduct,coldim,rowdim, rank,nullity, Inner productin

Mnxn, inner product on R**n generated by A, Weighed Euclidean Inner Produc,

Eigenvalue, Eigenvector, Cayley-Hamilton theorem, similarity.

Calculus : (10 packages)

http://www.geocities.com/xhungab/calculus.html
03 The Derivative : The tangent, The normal, Newton's method, Mean Value

05 Appplications of the definite integral : Area, Solids of revolution.

"Disk", Solids of revolution. "Cylindrical Shells"; The arc length.

The news groups of this work :

http://groups.yahoo.com/group/mathc/
Thank.