VA ROG REPEDEEEE AM TEST VREAU CORECTTTTTTT

Răspuns:
a) f(1)=2×1+5=7
f(-1)=2×(-1)+5=3
f(0)=2×0+5=5
f(1/2)=2×1/2+5=6
f(-3)=2×(-3)+5=-6+5=-1
b) f(1)+f(2)+f(3)+...+f(10)
f(10)×[f(10)-1] totul supra 2
f(10)=2×10+5=25
25×(25-1) totul supra 2
[tex] \frac{25 \times 24}{2} [/tex]
25×12=300