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1³, 2³, 3³, 4³, ...
Un = n³
Jawaban: A
6. Un = 2n
U1 = 2. 1 = 2
U2 = 2 . 2 = 4
U3 = 2 . 3 = 6
2, 4, 6, ...
Jawaban: B
7. U17 = 17²
U17 = 289
Jawaban: C
8. a = U1 = 2000
b = U2 - U1
b = 1940 - 2000
b = -60
U10 = a + (n - 1) . b
U10 = 2000 + (10 - 1) . (-60)
U10 = 2000 + 9 . (-60)
U10 = 2000 - 540
U10 = 1460
Jawaban: D