Penjelasan dengan langkah-langkah:
—Nomor 1
a = 1/25
r = (1/5)/(1/25) = 5
U9 = a x r^(n-1)
U9 = 1/25 x 5^(9-1)
U9 = 1/5^2 x 5^8
U9 = 5^6
U9 = 15.625
—Nomor 2
Pola bil ganjil = 2n - 1
a/U1 = 2.1 - 1 = 1
b = 2
S16 = n/2 x (a + U16)
S16 = 16/2 x (1 + (2.16 - 1))
S16 = 8 x (1 + 32 - 1)
S16 = 8 x 32
S16 = 256
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Penjelasan dengan langkah-langkah:
—Nomor 1
a = 1/25
r = (1/5)/(1/25) = 5
U9 = a x r^(n-1)
U9 = 1/25 x 5^(9-1)
U9 = 1/5^2 x 5^8
U9 = 5^6
U9 = 15.625
—Nomor 2
Pola bil ganjil = 2n - 1
a/U1 = 2.1 - 1 = 1
b = 2
S16 = n/2 x (a + U16)
S16 = 16/2 x (1 + (2.16 - 1))
S16 = 8 x (1 + 32 - 1)
S16 = 8 x 32
S16 = 256