a. 3,5,7,9,11,…….
b. 10,8,6,4,2,……..
c. -7,-4,-1,2,5
3.tentukan suku ke 12 dan ke 19 dari barisan bilangan berikut.
Jawaban:
PolBil =
a = 3
b = 2
U12 = a + 11b
U12 = 3 + 11(2)
U12 = 25
U19 = a + 18b
U19 = 3 + 18(2)
U19 = 3 + 36
U19 = 39
———-
a = 10
b = -2
U12 = a + 11b
U12 = 10 + 11(-2)
U12 = 10 – 22
U12 = -12
U19 = a + 18b
U19 = 10 + 18(-2)
U19 = 10 – 36
U19 = -26
————-
a = -7
b = +3
U12 = a + 11b
U12 = -7 + 11(3)
U12 = 26
U19 = a + 18b
U19 = -7 + 18(3)
U19 = 47