Harvard University, FAS

Calculus, Series and Differential Equations

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From: John Mackey <jfm@math.harvard.edu>
Subject: hint for #6 in section 17.2
Time: 05/01/2001 at 21:33:11

Hi Folks,

The first guess for yp in #6 is (ax+b)e^(-x),
but since this is part of yh it needs to be multiplied by x. When you do all of the algebra, this guess will
still not work.

The guess which finally ends up working is
yp = (a x^3 +b x^2) e^(-x).

Please keep up the good work!

JM

 

 

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