a) Basic matrices functions : addm, subm, multm, powm, smultm, transpose, trace, det, minor, mminor, cofactor, mcofactor, adjoint, inverse, inverse(gaussjordan), gauss, gaussjordan, LU. b) Basic vectors functions in R**n : norm, distance, innerproduct,coldim, rowdim, rank, nullity,leastsqrs. c) With random values. d) Save your work in a text file.