Question

Determinati numarul real a, stiind ca punctul A(1,0) apartine graficul functiei F:R->R, f(x)=x-a

Answer 1

Daca A(1,0) ∈ Gf => f(1)=0

1-a=0

a=1-0

a=1

Answer 2

A(1;0) ∈ Gf ⇔ f(1) = 0 l

f(1) = 1-a l ⇒ 1-a = 0

a = 1

! Daca Z(x;y) ∈ Gf ⇔f(x) = y