Question

Ajutor !!!!!!!!!
Dau coroana ​

Answer 1

Răspuns:

f(0) + f(1) + f(2) + f(3) + f(4) + f(5) + f(6) =

= (3 - 2×0) + (3 - 2×1) + (3 - 2×2) + (3 - 2×3) + (3 - 2×4) + (3 - 2×5) + (3 - 2×6) =

= (3 - 0) + (3 - 2) + (3 - 4) + (3 - 6) + (3 - 8) + (3 - 10) + (3 - 12) =

= 3 + 1 - 1 - 3 - 5 - 7 - 9 =

= - 21

Explicație pas cu pas: