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

question 31

Multiple Choice

Find the value of the determinant.
- $\left| \begin{array} { l l } \mathrm { a } & \mathrm { b } \\ \mathrm { b } & \mathrm { a } \end{array} \right|$

• A) \(a ^ { 2 } + b ^ { 2 }\)
• B) \(2 a b\)
• C) 0
• D) \(a ^ { 2 } - b ^ { 2 }\)