Question

NOTASI SIGMA
NO 1. jawab pake cara kalo bisa terlampir (soal di pict)

Answer 1

Verified answer

Notas sigma

f(n) = n(n+1)(n+2)
f(1) = 1(2)(3) = 6
f(2) = 2(3)(4) = 24
f(3) = 3(4)(5) = 60
f(4) = 4(5)(6) = 120
f(5) = 5(6)(7) = 210
jumlahkan = 420

5
∑ n(n+1)(n+2) / 3
n = 1
= 420/3
= 140