Thread: geometric Sequence
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Old October 20th, 2008, 07:11 AM
batman batman is offline
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note 320/400=0.8 (=256/320=...). You thus find x_n = 0.8 x_(n-1), the closed form is then given by x_n = 400*(0.8)^(n-1).
Can you do the other exercise yourself now?
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