invert

The Matrix Operations software provides essential matrix calculations, including addition, subtraction, and multiplication. Users can also perform scalar operations and apply row and column operations. The software allows for determining the upper triangular, transposed, and inverted matrix as well as calculating determinants. Additionally, it features Gaussian and Gauss-Jordan elimination for more complex operations.

"Piano Chords" software offers a visual representation of various chords and scales on a virtual keyboard. Users can select any key tone to view a wide range of chords and scales, making it easy to learn and play piano.