The Determinant

The definition of the determinant of a matrix is something we will not need in this course. What we will need is to use the determinant. Here are some examples of computations.


  a={{a11, a12},{a21, a22}}


  Det[a]


  b={{b11, b12, b13},{b21, b22, b23},{b31, b32, b33}}


  Det[b]


  c={{2, 1, 0, 1},{3, 2, 1, 2},{4, 0, 1, 4},{1, 0, 2, 1}}


  Det[c]

Up to Two Important Functions of a Matrix