MatrixRank
 Usage
• MatrixRank[m] gives the rank of the matrix m.
Notes
• MatrixRank works on both numerical and symbolic matrices. • The rank of a matrix is the number of linearly independent rows or columns. • MatrixRank[m, Modulus->n] finds the rank for integer matrices modulo n. • MatrixRank[m, ZeroTest -> test] evaluates test[ m[[i, j]] ] to determine whether matrix elements are zero. The default setting is ZeroTest -> Automatic. • MatrixRank[m, Tolerance -> t] gives the minimum rank with each element in a numerical matrix assumed to be correct only to within tolerance t. • New in Version 5. • Advanced Documentation.
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