4. For the matrix $A = \begin{bmatrix} 2 & -1 & 0 \ 3 & -2 & 1 \ 0 & 2 & 0 \end{bmatrix}$, det(A) =
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The determinant of a 2x2 matrix is calculated as follows: det(A) = ad - bc where a, b, c, and d are the elements of the matrix A. In this case, we have: a = 2, b = 0, c = -1, and d = 4 So, we can plug these values into the formula: det(A) = (2)(4) - (0)(-1) = Show more…
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