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9/16 , 3/4 , 15/16 , 9/8, ...
termasuk barisan aritmatika MN
a = 9/16
b = 3/4 - 9/16 = 12/16 - 9/16 = 3/16
Un = a + (n-1) b
Un = 9/16 + (n-1) 3/16
Un = 9/16 + 3/16 n - 3/16
Un = 3/16 n + 6/16
Un = 3/16 n + 3/8. (rumus)
U8 = 3/16 (8) + 3/8
U8 = 3/2 + 3/8
U8 = 12/8 + 3/8 = 15/8
2.
U4 = 22
U6 + U10 = 92
jawaban no 2 ada di gambar