-->A = [1 0; 0 1] 

  A  = 

   

     1.    0.   
    0.    1.  
 
 -->B=[2 3;4 5] 

  B  = 

   

     2.    3.   

     4.    5.   

   

 -->B*A 

  ans  = 

   

     2.    3.   

     4.    5.   

   

 -->B.*A 

  ans  = 

   

     2.    0.   

     0.    5.