

barisan dan deret aritmatika
Presentation
•
Mathematics
•
1st Grade
•
Easy
yoti palestari
Used 3+ times
FREE Resource
4 Slides • 4 Questions
1
BARISAN ARITMATIKA
Some text here about the topic of discussion
2
Masih ingatkah kalian apa itu barisan bilangan?
contoh barisan bilangan :
1,3,5,7,9,...
5,10,15,20,25,...
3
Open Ended
dari contoh 1 : 1,3,5,7,9,....
pola barisannya apa?.....
4
Open Ended
dari contoh 1 ternyata pola barisan ditambah 2, maka barisan bilangan tersebut termasuk barisan aritmatika, jadi menurut kalian apa itu barisan aritmatika?
5
Barisan aritmatika ialah sebuah baris yang memiliki nilai di setiap sukunya yang diperoleh dari suku sebelumnya. Biasanya menggunakan penjumlahan atau bisa juga pengurangan dengan satu buah bilangan.
bilangantersebut disebut beda
Misal suku pertama = Un = a
dan beda = b
maka :
U1 = a
U2 = a + b
U3 = a + 2b
dst
Un = a + ( n-1). b
jadi rumus suku ke n barisan aritmatika = Un = a + ( n-1). b
dimana : Un = suku ke n
b = beda
6
contoh 4 : pada halaman 87
7
Open Ended
Tentukan suku ke 8 dari barisan aritmatika 9,5,1,-3,....
8
Open Ended
tentukan suku ke 12 dari barisan aritmatika -10,-7,-4, .....
BARISAN ARITMATIKA
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