rancang formula barisan bilangan 3+7+11+15+.....+(4n-1)
Matematika
sulastri32
Pertanyaan
rancang formula barisan bilangan 3+7+11+15+.....+(4n-1)
1 Jawaban
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1. Jawaban HappyTyasFS
Sn = n/2 (a+un)
sn= n/2 (3+4n-1)
= N/2 (4n+2)
=n(2n+2)