Răspunsuri

2014-08-28T18:37:11+03:00
 \sqrt{\frac{2}{3}}  ^{(-1}= \frac{1}{ \sqrt{\frac{2}{3}}}  = \frac{\sqrt{ \frac{2}{3}} } {\frac{2}{3} }= \sqrt{\frac{ 2}{3} }* \frac{3}{2} = \frac{3\sqrt{ \frac{2}{3} } }{2}
Putem utiliza rapid relatia (a/b)^{-1}=(b/a)^{-1}=radical(6)/2