Math 220 Assignment

November 7, 2001

Due Friday, November 9

  1. Find the determinant of the matrix

     
    (
    1 
    2
    -4
    1
    -2
    10
    -1
    1
    1
    0
    1
    5
    2
    -9
    1
    0
    		)
    		  .

  2. What is the determinant of the 4 \times 4 matrix

     
    (
    a 
    b
    c
    d
    0
    e
    f
    g
    0
    0
    h
    i
    0
    0
    0
    j
    		)
    		  ?  

  3. Find an ordered list of elementary 3 \times 3 matrices whose matrix product is the matrix

     
    (
    2 
    2
    1
    -2
    1
    2
    -1
    2
    -2
    		)
    		  .  

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