Notes : Matrices ( Form 5 - Chapter 4)

LETS LEARN ABOUT MATRICES !  (^_^)

First of all, we should know what is column and row....

(1)  is row matrix ( contains only 1 row)....

(2) 
      is a column matrix (with only 1 column).... 
  

Remember This Formula:

(a) Addition of Matrices:

    

(b) Subtraction of Matrices:

(c) Multiplication of Matrices:



(d) Inverse Matrix


     Inverse matrix of 

 

     where ad - bc not equal with zero..


   * if the determinant ad - bc equal with zero, then the matrix has no inverse.


   * Example:

                                         
         
       Then inverse of M,   
                                                           

(e) A matrix multiply by its inverse 
     = identity matrix