Research about Matrix in Maths

Research Findings:
1. Where do matrices come into play? Well, as you know (or maybe not, I don't know) a linear system can be seen in matrix-vector form as
2. Different fields in computer science needs different maths tools to support. Computer Graph needs Matrix. Video games needs Matrix.
3. Matrices are so similar to arrays, in fact, that arrays are typically used to represent matrices in computer programs.
4. Adjcency Matrix is used to model Graph.
5. n-vector, column vector, row vector, 
6. zero matrix, diagonal matrix, identity matrix, 
7. A, T, I, U, L, P, S

Impact:
1.  Geometry
2.  Linear Transformation
3.  Terms
4.  Notations, and Basic Operations

Applications:
1.  Represent linear transformations
2.  Games

Matrix Multiplication:
https://www.khanacademy.org/math/precalculus/precalc-matrices/matrix_multiplication/v/multiplying-a-matrix-by-a-matrix
https://en.wikipedia.org/wiki/Matrix_multiplication
http://math.stackexchange.com/questions/160328/what-is-the-usefulness-of-matrices
https://en.wikipedia.org/wiki/Applied_mathematics