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GROUP  5 4.6  IDENTITY  MATRIX Leader Name   LO SHUI SHUANG Team Name TEO SIANG YING LIM WEN HUI CHAI CHONG LI
INTRODUCE AN identity matrix , which when multiplying it to another matrix ,such as A ,the pruduct is the matrix A  itself .  n x 1 = 1 x n = n ( n is any number ) There are matric that works exactly  Like 1. Such matrix is called an identity matrix . I A = A  And  A I  = A
EXAMPLE ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],We find that  AB =BA =A.  Therefore,  B  is an identity matrix .
4.6 A  Determing  Wheather  a Given is an Identity   Matrix ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
4.6 B  Writing an Identity Matrix and Doing   Calculation involving Identity Matrices ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Exercise  4.6 A ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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Group 5

  • 1. GROUP 5 4.6 IDENTITY MATRIX Leader Name LO SHUI SHUANG Team Name TEO SIANG YING LIM WEN HUI CHAI CHONG LI
  • 2. INTRODUCE AN identity matrix , which when multiplying it to another matrix ,such as A ,the pruduct is the matrix A itself . n x 1 = 1 x n = n ( n is any number ) There are matric that works exactly Like 1. Such matrix is called an identity matrix . I A = A And A I = A
  • 3.
  • 4.
  • 5.
  • 6.