$\frac{1}{3} i$ এর বর্গমূল কোনটি?

$\pm \frac{1}{\sqrt{3}}(1+i)$

$\pm \frac{1}{\sqrt{3}}(1-i)$

$\pm \frac{1}{\sqrt{6}}(1+i)$

$\pm \frac{1}{\sqrt{6}}(1-i)$