Some basic things about matrices:
- Matrices are like vectors of vectors, so they have rows and columns.
- You can use matrices for transforming vectors. You do this by multipling the matrix with the vector. This way you can move, scale or rotate vectors.
- If you multiply two matrices, the new matrix will combine the transformations of each matrix. So if you combine a rotation and scaling matrix, the vector will be rotated and scaled in one multiplication.
- By multipling with the inverse of a matrix, you can make that matrix undo.
That's very general info, hope that helps you.
