The determinant $Δ=\begin{vmatrix}p&2-i&i+1\\2+i&q&3+i\\1-i&3-i&r\end{vmatrix}$ is
Answer & explanation
Correct answer: option 1
Since $Δ=\bar{Δ}⇒Δ$ is purely real.
Hence (A) is the correct answer.
The determinant $Δ=\begin{vmatrix}p&2-i&i+1\\2+i&q&3+i\\1-i&3-i&r\end{vmatrix}$ is
Correct answer: option 1
Since $Δ=\bar{Δ}⇒Δ$ is purely real.
Hence (A) is the correct answer.