Răspuns :
Răspuns:
a.
f(2)=2×2-3=4-3=1
b.
f(-1)=-1-1=-2
f(0)=0-1=-1
f(2)=2-1=1
f(3)=3-1=2
Imf = {-2, -1, 1, 2}
c.
f(2)=-2×2+5=-4+5=1
=> A(2, 1) ∈ Gf
Răspuns:
a.
f(2)=2×2-3=4-3=1
b.
f(-1)=-1-1=-2
f(0)=0-1=-1
f(2)=2-1=1
f(3)=3-1=2
Imf = {-2, -1, 1, 2}
c.
f(2)=-2×2+5=-4+5=1
=> A(2, 1) ∈ Gf