It's PRO-version of matrix calculator.
Its main task calculate mathematical matrices.

ed matrix operations:
- Matrix Inverse.
- Matrix Determinant.
- Matrix Scalar multiplication.
- Matrix Addition.
- Matrix Subtraction.
- Matrix Multiplication.
- Matrix Transposition.
- Matrix Rank.

The application can work with:
- Integers (-2, -1, 0, 1, 2 etc.).
- Decimal fractions (1.5, 3.14 etc.).
- Common fractions (1/2, 3/4, 7/3 etc.).
- Complex numbers (i, 1+i, 1/2-2i, 0.5+2/3i etc.).

Recent changes:
- Added calculation of the matrix's rank.
- Bug fixes.