Question

Determinati imaginea urmatoarei functii:
f : R \ {2} → R, f(x) = 3x + 1/x-2

Answer 1

x    |    1           3
___|______________________
f(x) |   -4            10

f(1)=(3*1+1)/(1-2)=4/(-1)=-4

f(2)=(3*3+1)/(3-2)=10

Imf={-4;10}