Calculate the determinant of a 4x4 matrix.

Published on November 12, 2024

Linear-Algebra

The determinant of the given 4x4 matrix is calculated using cofactor expansion along the fourth row, resulting in a determinant of -21.

Question

Answer

Here’s how to calculate the determinant of the given matrix:
The given matrix is:
We can compute the determinant using cofactor expansion along the last row:
where represents the cofactor of the element in the -th row and -th column.
Now, substitute the cofactors back into the determinant formula:
Final Answer: The final answer is