Find the fifth term of the geometric progression 2, -1/2, 1/8……
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Step-by-step explanation:
2, -½ , ⅛ ,..
ex :
a = 2
r = ratio = -1/2 : 2/1 = -1/2 . ½ = -¼
fifth term [5]
Un = arⁿ-¹
U5 = 2 . (-¼)⁵-¹
U5 = 2 . (-¼)⁴
U5 = 2. ¹/256
U5 = ²/256
U5 = 1/128
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hope this help you..
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