Evaluate the determinant.
-$\left| \begin{array} { l l } 5 & 7 \ 3 & 8 \end{array} \right|$
A) 19
B) 61
C) $- 19$
D) 11

Name: Evaluate the determinant. -$\left| \begin{array} { l l } 5 & 7 \\ 3 & 8 \end{array} \right|$ A) 19 B) 61 C) $- 19$ D) 11
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Question

Quizplus · Accepted Answer

The determinant of a 2x2 matrix $\left| \begin{array} { l l } a & b \ c & d \end{array} \right|$ is calculated as $ad - bc$. For this matrix, it is $5*8 - 7*3 = 40 - 21 = 19$.

Evaluate the Determinant ∣5738∣\left| \begin{array} { l l } 5 & 7 \\ 3 & 8 \end{array} \right|​53​78​​

Evaluate the Determinant $\left| \begin{array} { l l } 5 & 7 \\ 3 & 8 \end{array} \right|$