The model function has the form f ( x , β ) {\displaystyle f(x,\beta )} , where m adjustable parameters are held in the vector β {\displaystyle {\boldsymbol {\beta }}} .
Funcția model are forma f ( x , β ) {\displaystyle f(x,\beta )\,} , care are m parametri (coeficienți), plasați în vectorul β {\displaystyle {\boldsymbol {\beta }}\,} .