Question

Evaluate the determinant for the following matrix: 3 -5 1 1

A. 5
B. –4
C. 8
D. –2

Answer 1

The matrix is

`A = \begin{bmatrix} 3&-5\\1&1\end{bmatrix}`

The determinant of A is
det(A) = (3)*(1) - (-5)*(1) = 3 + 5 = 8

Answer: 8