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Solution to nonhomogenous difference equation?

  1. Sep 15, 2012 #1
    1. The problem statement, all variables and given/known data

    Though not a single thing has been mentioned about difference equations in my signals & systems course/any courses I have taken, difference equations have appeared on the homework. It is:
    yn+1 + (1/5)yn = 10-n, y0 = 1

    2. Relevant equations
    yp = Akn


    3. The attempt at a solution
    Everything I try results in yn+1 = (-1/5)n + (10/3)10-n, which is wrong. What am I doing incorrectly?
     
  2. jcsd
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