Răspuns:
[tex] \frac{ \frac{ - 1}{2} }{ \frac{1}{2} } - \frac{ \frac{ \sqrt{3} }{3} \times ( \frac{ - \sqrt{2} }{2}) }{ - 1} = - 1 - ( \frac{ - \sqrt{3} }{3} \times ( \frac{ \ - \sqrt{2} {} }{2} ) = - 1 + \frac{ \sqrt{3} }{3} \times ( \frac{ - \sqrt{2} }{2} ) = - 1 - \frac{ \sqrt{6} }{6} [/tex]
Care e aproximativ egal cu -1, 40
Succes!
