Ama penyelesaiannya yaa :)
a = suku pertama = 1
b = beda = 4 – 1 = 7 – 4 = 10 – 7 = 3
Un = a + (n – 1) b
U10 = 1 + (10 – 1) 3
U10 = 1 + (9) 3
U10 = 1 + 27
U10 = 28
Ama penyelesaiannya yaa :)
a = suku pertama = 1
b = beda = 4 – 1 = 7 – 4 = 10 – 7 = 3
Un = a + (n – 1) b
U10 = 1 + (10 – 1) 3
U10 = 1 + (9) 3
U10 = 1 + 27
U10 = 28