Question

11. Consideram functia f: RR,f(x)= 2x+1.
Calculati suma s= f(-2) + f (-1) + f(0)+f(1)+f(2)​

Answer 1

Răspuns:

f(-2)=-4+1=-3 ;   f(-1)=-2+1=-1 ;          f(0)=1;           f(1)=2+1=3 ;         f(2)=4+1=5 ;                           -3-1+1+3+5=9-4=5

Explicație pas cu pas:

Answer 2

Răspuns:

f(-2)= 2×(-2)+1=-3

f(-1)=2×(-1)+1=-1

f(0)= 2×0+1=1

f(1)= 2×1+1=3

f(2)=2×2+1=5

s=-3-1+1+3+5= 5