Evaluate the determinant.
-$\left| \begin{array} { l l } 3 & 1 \ 2 & 2 \end{array} \right|$
A) 4
B) 8
C) $- 1$
D) $- 4$

Name: Evaluate the determinant. -$\left| \begin{array} { l l } 3 & 1 \\ 2 & 2 \end{array} \right|$ A) 4 B) 8 C) $- 1$ D) $- 4$
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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 $3*2 - 1*2 = 6 - 2 = 4$.

Evaluate the Determinant ∣3122∣\left| \begin{array} { l l } 3 & 1 \\ 2 & 2 \end{array} \right|​32​12​​

Evaluate the Determinant $\left| \begin{array} { l l } 3 & 1 \\ 2 & 2 \end{array} \right|$