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03/21/00 06:42am

I'm trying to solve a problem in the form:


with NDSolve

I have two boundary conditions:
T[0,t]==To AND D[T[x,t],x]==0 @ x==L

and one initial Value:

At (x,t)=(0,0) the boundary conditions conflict
so I set up an If statement to take care of this:

new Initial condition

The problem is when I use NDSolve to solve this problem
It says that the equation list must contain an equation
and an initial condition

how do I get NDSolve to use the If statement?
I have tried setting up a series of functions of x
to no avail

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