Question

fie functia f:{0;1;2;3}->R,f (x)=x-3 .Daca punctul M (2;m) apartine Gf,atunci m=...

Answer 1

2∈Domeniului de definitie, deci are sens f(2)
f(2)=m
2-3=m
-1=m
m=-1
M(2;-1)
as simple as that!!!