October 24th, 2007, 05:07 PM  #1 
Newbie Joined: Oct 2007 From: SDSU Posts: 3 Thanks: 0  Separation of Variables
Hello, My problem is using separation of variables for what is equivalent to a PDE. The problem is of the form dT [color=white]```[/color] d^2T  = A  +B dt [color=white]```[/color] dy^2 The examples I've found all are only of first order, and don't have a constant added on. Using the assumption of T(t,y)=X(t)+Y(y) seems to be about what I need, but then I'm not sure what to do about B. Thanks, Z 
October 25th, 2007, 02:11 PM  #2 
Global Moderator Joined: May 2007 Posts: 6,416 Thanks: 558 
Start with T=S+Bt. The equation in S will not have B in it.


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separation, variables 
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