Rumus suku ke n barisan bilangan 3,7,11,15,....adalah.... pakek cara pliss.... Question from @dikaadel48

September 2018 2 33 Report

Rumus suku ke n barisan bilangan 3,7,11,15,....adalah....

pakek cara pliss

MichelleDiana Un = a + (n-1) b
Un = 3 + (n-1) 4
Un = 3 + 4n -4
Un = 4n -1

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Reyznha $a = 3 \\ b = 7 - 3 = 4 \\\\ \boxed{Rumus} \\ Un = a + (n - 1)b Un = 3 + (n - 1)4 \\ Un = 3 + 4n - 4 \\ \boxed{Un = 4n - 1}$

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