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Question 20 Use the following set of equations to solve questions (20 to 24) Based on Inverse method 2x -xy = 4 3x + 2xy = 2 (1) (2) The value of column 4 (C4) in the augmented matrix (A| 1) after zeroing element (azı) is: O [1/2, 3/2] O [1, -1/2] [10] 0 None
Question 21 The value of row 1 (R1) in the augmented matrix (A1) just after getting a unity diagonal is: 0 [1, -1/2, 1/2,0) O (1.0, 2/7, 1/7) O None [1.0.-3/7.2/7]
Question 22 The value of the multiplier when zeroing element (a21): None 3 0-1/2 1/2
Question 23 The exact values of Xų is: None 5/7 -8/7
Question 24 The Left to right diagonal elements in the inverse matrix of A is: O [2/7.-3/7] None 0 [2/7, 1/7] O [2/7.2/7]
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