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Unformatted text preview: as the equivalent of f (n) where f is a function from {0, 1, 2, …} to S. ༉ We call an a term of the sequence. Deﬁnition: a string is a ﬁnite sequence of characters from a ﬁnite set (an alphabet). Geometric Progression Deﬁnition: a geometric progression is a sequence of the form: a, ar, ar2, …, arn, … where the initial term a and the common ratio r are real numbers. Examples: 1. Let a = 1 and r = −1. Then: 2. Let a = 2 and r = 5. Then: 3. Let a = 6 and r = 1/3. Then: Arithme$c Progression Deﬁnition: a arithmetic progression is a sequence of the form: a, a+d, a+2d, …, a+nd, … where the initial term a and the common diﬀerence d are real...
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 Spring '14
 M.Nojoumian
 Computer Science

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