Vectors and matrices
Vector( <Point> )
Vector( <Start Point>, <End Point> )
u, v --- Vecotrs
Dot(u, v)
--- Inner product of u and v
Cross(u, v)
--- Exterior product of u and v
Matrix is a list of lists.
A = {{1, 2, 3}, {2, 2, 2}, {1, 1, -1}}
We can calculate Determinant(A), Invert(A), MatrixRank(A).