My Math Forum Separation of Variables

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 October 24th, 2007, 04:07 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, 01:11 PM #2 Global Moderator   Joined: May 2007 Posts: 6,306 Thanks: 525 Start with T=S+Bt. The equation in S will not have B in it.

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