" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
= (36 +306)/2
= 171
rumus suku ke-n
Un = 36 + (n- 1)9
= 36 + 9n - 9
= 9n + 27
⇒ Un = 306
⇒ 9n + 27 = 306
⇒ 9n = 279
⇒ n = 31
suku tengah ,
t = (n + 1)/2
= (31 + 1)/2
= 16
jadi, suku tengahnya adalah
Ut = U16 = 9(16) + 27
= 144 + 27
= 171