1/2 ori √3/2 +√3 ori √3/3 +√2/2 ori √2/2 minus √3/2 ori 1/2 =?

Răspuns :

1/2 × √3/2 +√3 × √3/3 +√2/2 × √2/2 - √3/2 × 1/2 =
=√3/4 +3/3 +2/4  - √3/4 =
= 1 +1/2  =3/2

1/2 × √3/2 +√3 × √3/3 +√2/2 × √2/2 - √3/2 × 1/2 =√3/4 +3/3 +2/4  - √3/4 =1 +1/2  =3/2