The Wolfram Language supports operations on matrices of any size and has a range of input methods appropriate for different needs, from small, formatted matrices via keyboard or palettes to text-based entry or automatic import.
Selected examples from the video:
Lists are very important general structures in the Wolfram Language. A matrix in the Wolfram Language is represented as a list of sublists of the same length.
As before, you can move through the empty placeholders using the tab or arrow keys.
To create a new row, use . The new row will be inserted immediately below the position of your cursor. Pressing with the cursor positioned after any entry in the last row creates a new row at the bottom of the matrix:
Similarly, new columns can be entered using :
You can import a matrix from a file. In this example, data is imported from a file and displayed in MatrixForm: