Diketahui : 1,4, 7,10
a = 1, b = 3 (4 - 1)
Ditanya : U60...?
Jawab :
Un = a + (n - 1)b
U60 = 1 + (60 - 1)3
U60 = 1 + 59.3
U60 = 1 + 177
U60 = 178
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Diketahui : 1,4, 7,10
a = 1, b = 3 (4 - 1)
Ditanya : U60...?
Jawab :
Un = a + (n - 1)b
U60 = 1 + (60 - 1)3
U60 = 1 + 59.3
U60 = 1 + 177
U60 = 178