Tolang jawab yaaa.pakai rumus jangan lupa

1, 5, 9, 13, …
a = 1
b = 4

Un = a + (n – 1)b
Un = 1 + (n – 1)4
Un = 1 + 4n – 4
Un = 4n – 3

U5 = 4(5) – 3 = 20 – 3 = 17
U6 = 4(6) – 3 = 24 – 3 = 21
U10 = 4(10) – 3 = 40 -3 = 37