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How do I do this? We're currently learning how to solve nonhomogeneous recurrence relations.

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    is it $a_{n-1}$?2017-02-24
  • 0
    It is! Sorry, I will edit that in.2017-02-24
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    Duplicate of [Solving a non-homogenous linear recurrence relation with initial conditions](http://math.stackexchange.com/questions/2158577/solving-a-non-homogenous-linear-recurrence-relation-with-initial-conditions)2017-02-24

1 Answers 1

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Hint:

  1. Shift the term with $a_{n - 1}$ to the left.
  2. Divide throughout by $1.04^n$.
  3. Do a summation on both sides.
  4. LHS telescopes and almost everything is cancelled out.
  5. RHS is just a geometric series.