Question

Rumus suku ke n suatu barisan Un= 2n -10. tentukan lima suku pertama ??

Answer 1

Un = 2n - 10

U1 = 2.1 - 10 = 2 - 10 = -8
U2 = 2.2 - 10 = 4 - 10 = -6
U3 = 2.3 - 10 = 6 - 10 = -4
U4 = 2.4 - 10 = 8 - 10 = -2
U5 = 2.5 - 10 = 10 - 10 = 0

Semoga membantu, maaf kalau salah:)