حاصل ${{({{m}^{-\frac{3}{4}}}\times {{n}^{\frac{1}{2}}})}^{3}}{{({{m}^{4}}{{n}^{-2}})}^{\frac{1}{2}}}$ کدام است؟
1 )
${{m}^{-\frac{1}{4}}}\times {{n}^{\frac{2}{3}}}$
2 )
${{m}^{-\frac{1}{6}}}\times {{n}^{\frac{1}{2}}}$
3 )
${{m}^{-\frac{1}{6}}}\times {{n}^{\frac{2}{3}}}$
${{m}^{-\frac{1}{4}}}\times {{n}^{\frac{1}{2}}}$