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Question: Constants in pdsolve

Question:Constants in pdsolve

batmaple 26 Maple
June 17 2010
1

Hi,

I wish to declare the diffusion coefficient in the Fick's diffusion law as constant and solve numerically.How do I declare constants for a pd to use in pdsolve?I also have some constants in my boundary conditions.

diff(f(x, t), t) =D*(diff(f(x, t), x, x))

is the PD and,

{f(x, 0) = 0.25, (D[1](f))(0, t) = (1-N)*sqrt((2*k)/t)/(D)}

are the bc's.

 

Thank you,

Regards
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