" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
Verified answer
Mapel = MatematikaBab = Barisan dan Deret
Tentang Deret Aritmetika
1, 3, 5, 7, 9, ...
Diketahui
a = 1
b = 2
Sn = n/2 (2a + (n-1)b)
S13 = 13/2 (2.1 + (13-1)2)
S13 = 6,5 (2 + 24)
S13 = 6,5 (26)
S13 = 169
Semoga membantu :)
a (awal) = 1
b (beda) = 2
S13 (jumlah 13 suku pertama) ...???
Sn = n/2 (a + Un)
Un = a + (n-1) b
S13 = 13/2 (a + [a + 12b] )
S13 = 13/2 ( 2 (1) + 12 (2) )
S13 = 13/2 (2 + 24)
S13 = 13/2 (26)
S13 = 13 x 13
S13 = 169 <<=== Lets Rock