a = 4
b = 10 - 4 = 6, 16 - 10 = 6, 6 konstan.
Un = a + (n - 1)b
U80 = 4 + (80 - 1)6
U80 = 4 + 474
U80 = 478.
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Verified answer
a = 4
b = 10 - 4 = 6, 16 - 10 = 6, 6 konstan.
Un = a + (n - 1)b
U80 = 4 + (80 - 1)6
U80 = 4 + 474
U80 = 478.