For n > 0, let F(n) be the number of strings of length n over an alphabet of size k. Derive a recurrence relation for this function, and then prove that F(n) = k^n using the method of generating functions.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.2: Arithmetic Sequences
Problem 68E
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For n > 0, let F(n) be the number of strings of length n over an alphabet of size k. Derive
a recurrence relation for this function, and then prove that F(n) = k^n using the method of
generating functions.

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