Question

Jika f(n) = f(n-1) +2n , dan f(0) = -3, nilai f(2) =

Answer 1

F(n) = f(n - 1) + 2n
n = 1 --> f(1) = f(0) + 2
                   = - 3 + 2
                   = - 1

n = 2 --> f(2) = f(1) + 4
                   = - 1 + 4
                   = 3