Rank of a matrix
The rank of a mark is calculated. This routine may be used
for testing linear independency of rowvectors. The routine
makes the matrix upper traingular and PartAns Y gives the
different stages of the process.
The trace of a square matrix is calculated. An error message
is given if the matrix is not quadratic.
This routine is testing whether the matrix is orthogonal i.e.
the inverse is equal to the transpose. An error message is gi-
ven for wrong dimension (must be quadratic). The answer is
logic 0 or 1. May be used to investigate if rowvectors are ort-
hogonal i.e. is an orthogonal basis of a vector space.
The transpose of a symbolic matrix is calculated.
Investigates whether a matrix is symmetric or not. Logic 0 or
2. Linear algebra