Determinant of a 4x4 matrix
Find the determinant of a 4x4 matrix
Explanation
The cofactor expansion of $A$ along the first column is
Calculating the
3x3 determinant in each term,
From these,
we obtain
Example:
Find the determinant of
as in the above method.
The cofactor expansion of $A$ along the first column is
Calculating the 3 by 3 determinant in each term,
We obtain
Calculator
Enter a 4x4 matrix and press "Execute" button. Then the determinant is displayed.
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