Baris dan Deret Aritmatika

Presentation

•

Mathematics

•

10th - 11th Grade

•

Medium

Agustinus Sutriono

Used 6+ times

FREE Resource

7 Slides • 6 Questions

Baris dan Deret Aritmatika

Multiple Select

Manakah bentuk barisan bilangan di bawah ini :

1, 2, 3, 4, 5 , 6, .....

1+2+3+4+5+6+ ...

7, 5, 3, 1 , ...

10 + 30 + 50 + 70 + ...

Multiple Select

Tentukan Beda dari Baris Aritmatika berikut ini : 5, –2, –9, –16, …

-7

-8

Multiple Choice

Tentukan Beda dari Baris Aritmatika berikut ini : 7, 5, 3, 1, …

-1

-2

Rumus suku ke-n dari barisan 5, –2, –9, –16, … adalah …

Diketahui: a = 5
b = –7
Ditanya: rumus suku ke-n barisan aritmatika tersebut = ?
Jawab:

Un=a+(n-1)b

Un=5+(n-1). -7
Un=5+(-7n) + 7
Un= - 7n + 12
Un= 7n - 12

Multiple Choice

1. Suku pertama berisan aritmatika adalah 9 dan bedanya adalah 3, rumus suku ke-n adalah ...

Un= 3n + 6

Un= 3n + 7

Un= 3n + 8

Un= 3n + 9

Multiple Choice

Tentukan Suku ke 1 dan suku ke 5 dari barisan aritmatika berikut : 2, 5, 8, 11, 14,17

2 dan 5

5 dan 8

8 dan 17

2 dan 14

Multiple Choice

Suku ke-40 dari barisan 7, 5, 3, 1, … adalah …

– 71

- 72

Baris dan Deret Aritmatika

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