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a = -17
Un = a + (n-1) b
U10 = -17 + 9.6
U10 = -17 + 54
U10 = 37
U3 = -5
B ?
JAWAB =
B = U3 - U1 = -5 - (-17 )
B2 = 12
B = 6
2.
U 10 ?
JAWAB =
U10 = -17 + (9)6
= -17 + 54
= 37