Explicație pas cu pas:
f(2)=2-2=0
f(3)=3-2=1
f(4)=4-2=2
f(5)=5-2=3
f(6)=6-2=4
f(7)=7-2=5
f(8)=8-2=6
f(9)=9-2=7
f(10)=10-2=8
f(2)+f(3)+f(4)+...+f(10)= 36
