Evaluate i&-1 -1&i - Vidyadip

MCQ

Evaluate $\begin{bmatrix}\text{i}&-1\\-1&\text{i}\end{bmatrix}$

✓
4
B
3
C
2
D
0

✓

Answer

Correct option: A.

4

Expanding along $\text{R}_1,$ we get.

$\triangle=\text{-i}(\text{i})-(-1)(-1)=-\text{i}^2-1=-(-1)-1=0.$

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