Jawaban:
DerArit =
a = 20
b = -4
Un = a - b + bn
Un = 20 -(-4) - 4n
U55 = 24 - 4(55)
a = -17
b = 4
Un = -17 - 4 + 4n
U55 = 4(55) - 21
2.
a = 25
b = -3
U75 = a + 74b
U75 = 25 + 74(-3)
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Jawaban:
DerArit =
a = 20
b = -4
Un = a - b + bn
Un = 20 -(-4) - 4n
Un = 24 - 4n
U55 = 24 - 4(55)
U55 = -196
a = -17
b = 4
Un = a - b + bn
Un = -17 - 4 + 4n
Un = 4n - 21
U55 = 4(55) - 21
U55 = 199
2.
a = 25
b = -3
U75 = a + 74b
U75 = 25 + 74(-3)
U75 = -197