SOLUTION: How do you find the value of |A| in this problem, A = [ -1 4(row 1) 9 -3(row 2)]???

Question 1053504: How do you find the value of |A| in this problem, A = [ -1 4(row 1) 9 -3(row 2)]???
Found 2 solutions by Fombitz, ikleyn:
Answer by Fombitz(32388)   (Show Source): You can put this solution on YOUR website!
For a 2x2 matrix, A,

Answer by ikleyn(52855)   (Show Source): You can put this solution on YOUR website!
.
On determinants for 2x2- matrices see the lesson
    - Determinant of a 2x2-matrix
in this site.

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