DERET ARITMATIKA
Presentation
•
Mathematics
•
5th Grade
•
Hard
Dewi Maryati
FREE Resource
3 Slides • 0 Questions
1
DERET ARITMATIKA
By Dewi Maryati
2
Barisan aritmatika adalah barisan bilangan yang memiliki beda yang sama sehingga menghasilkan pola tetap.
By. Dewi M
aryati
3
Un=a+(n+1)
=5+(n-1).(-7)
=5-7n+7
=12-7n
Jadi, rumus suku ke-n barisan aritmatika tersebut adalah
Un=12-7n
Jawab:
Pembahasan:
Diketahui:
a = 7,b = –2
ditanya U40
Suku ke-40 dari barisan 7, 5, 3, 1, … adalah …
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DERET ARITMATIKA
By Dewi Maryati
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