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1. The problem statement, all variables and given/known data

∂θ/∂t= D∇2θ + K, the mensioned equation is the heat equation for a cylindrical rod , and the requaired is to find the ordinary differential equation for θ(r) .where the radius of the rod is R , and K is constant ( correspond to a constant rate pf heat production)

2. Relevant equations

3. The attempt at a solution

i use separation of variables to obtain the required for a homogeneous heat equation , but with the constant the method didn't work out.

thanks for your time.

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# Homework Help: Inhomogeneuos heat equation

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