Find the value of the determinant.
-$$\left| \begin{array} { l l }
a & b \
b & a
\end{array} \right|$$
A) $a ^ { 2 } - b ^ { 2 }$
B) $a ^ { 2 } + b ^ { 2 }$
C) $2 a b$
D) 0

Name: Find the value of the determinant. -\[\left| \begin{array} { l l } a & b \\ b & a \end{array} \right|\] A) $a ^ { 2 } - b ^ { 2 }$ B) $a ^ { 2 } + b ^ { 2 }$ C) $2 a b$ D) 0
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Question

Find the value of the determinant.
-$$\left| \begin{array} { l l } 
a & b \
b & a
\end{array} \right|$$
A) $a ^ { 2 } - b ^ { 2 }$
B) $a ^ { 2 } + b ^ { 2 }$
C) $2 a b$
D) 0

Quizplus · Accepted Answer

The determinant of a 2x2 matrix $\left| \begin{array} { l l } a & b \ b & a \end{array} \right|$ is calculated as $a*a - b*b = a^2 - b^2$.

Find the Value of the Determinant ∣abba∣\left| \begin{array} { l l } a & b \\b & a\end{array} \right|​ab​ba​​

Find the Value of the Determinant $\left| \begin{array} { l l } a & b \\b & a\end{array} \right|$