Question

Evaluate the determinant of the matrix by a cofactor expansion along the first row. $A = \begin{bmatrix} -1 & 1 & 10 \\ 9 & 0 & -10 \\ 1 & 4 & 1 \end{bmatrix}$ det(A) = 301

          Evaluate the determinant of the matrix by a cofactor expansion along the first row.
$A = \begin{bmatrix} -1 & 1 & 10 \\ 9 & 0 & -10 \\ 1 & 4 & 1 \end{bmatrix}$
det(A) = 301

Evaluate the determinant of the matrix by a cofactor expansion along the first row.
A =
< b m a t r i x >
det(A) = 301

Added by Matthew E.

Elementary and Intermediate Algebra

Alan S. Tussy, R. David Gustafson 5th Edition

Instant Answer

Solved by Expert Varsha Aggarwal

12/31/2021

Step 1

det(A) = -1 * Cofactor(1,1) + 1 * Cofactor(1,2) + 10 * Cofactor(1,3) Show more…

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Evaluate the determinant of the matrix by a cofactor expansion along the first row. A=[[-1,1,10],[9,0,-10],[1,4,1]] det(A)= Evaluate the determinant of the matrix by a cofactor expansion along the first row. 10 10 4 det(A)= 301