# GATE2019-27

The value of the complex number $i^{-1/2}$ (where $i=\sqrt{-1}$) is
1. $\frac{1}{\sqrt{2}}\left ( 1-i \right )$
2. $-\frac{1}{\sqrt{2}}i$
3. $\frac{1}{\sqrt{2}}i$
4. $\frac{1}{\sqrt{2}}\left ( 1+i \right )$