Naming convention for matrix that is not inverted

Question

There is the inverse matrix, but how do we call the matrix before it became a inverse matrix? I called it normal matrix before but it sounds confusing cause normal makes it sound that it has to do with the 0 to 1 range.

Answer 1

It's definitely not normal matrix, because calling a matrix "normal" implies a very specific mathematical term. Instead, I would simply call it the "original matrix" to refer to the matrix before it became inverted. However, it is preferable if you give a matrix a variable name, so the original matrix can be called $A$ and the inverted matrix can be called $A^{-1}$ without ambiguity.