Question

Am nevoie la ex 4 si 5

Answer 1

f(1)=2×1-3=2-3=-1
f(2)=2×2-3=4-3=1
f(3)=2×3-3=6-3=3
f(4)=2×4-3=8-3=5
f(5)=2×5-3=10-3=7
f(1)+f(2)+f(3)+f(4)+f(5)=-1+1+3+5+7=15

-1+1=0(se reduc)
b) faci cele 2 axe, le notezi cu x si y si intersectia lor cu 0 si pui rezultatele pe axa
succes