The calculator will find the determinant of the square
2x
2 matrix
[4779], with steps shown.
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Cofactor Matrix Calculator
Solution
The determinant of a 2x2 matrix is ∣∣acbd∣∣=ad−bc.
∣∣4779∣∣=(4)⋅(9)−(7)⋅(7)=−13
Answer
∣∣4779∣∣=−13A