Define determinant. Compute the determinant without expanding:
Define determinant. Compute the determinant without expanding: $$\begin{bmatrix} -2 & 8 & -9 \ -1 & 7 & 0 \ 1 & -4 & 2 \end{bmatrix}$$ [5]
$$A = \begin{bmatrix} -2 & 8 & -9 \ -1 & 7 & 0 \ 1 & -4 & 2 \end{bmatrix}$$ A determinant is a scalar value associated with every square matrix, obtained from its entries via a well-defined rule. It is denoted $\det(A)$ or $A$. Geometrically it represents the scaling factor of the linear transf...