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Chapter 8
Generating Functions and Recursion

We've seen how the Generalised Binomial Theorem can be used to extract coefficients from a certain sort of generating function. Before we proceed with learning how to use generating functions to find explicit formulas for the \(n\)th term of a recursively-defined sequence, we need to know how to extract coefficients from some more complicated expressions.

Summary.
  • Method of partial fractions

  • Formula for factoring quadratic polynomials into the required form

  • Applying generating functions to recursively-defined sequences