CUET Preparation Today
$\Delta=\left|\begin{array}{ccc}p & 2-i & i+1 \\ 2+i & q & 3+i \\ 1-i & 3-i & r\end{array}\right|$ is always |
real imaginary zero none of these |
real |
Since $\Delta=\bar{\Delta} \quad ∴ \Delta$ is real only Hence (1) is the correct answer |
