Pe multimea R³ se defineste legea de compozitie [tex]( x_{1}, y_{1}, z_{1})*( x_{2}, y_{2}, z_{2}) = ( x_{1} + x_{2}, y_{1} + y_{2}, z_{1} *z_{2} )[/tex]
Gasiti elementul neutru.
Select one:
a. (1,1,0)
b. (0,1,1)
c. (0,1,0)
d. (0,0,1)
e. (1,0,0)
f. (1,0,1)