The difference between the Heat and Diffusion equation ?

thepioneerm
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the difference between the Heat and Diffusion equation ?!

Please:

What is the difference between the Heat and Diffusion equation ?!

thank you.​
 
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There is no difference. They are just different names, referring to different applications, for the same type of equation: more formally, a parabolic PDE.
 


HallsofIvy said:
There is no difference. They are just different names, referring to different applications, for the same type of equation: more formally, a parabolic PDE.


thank you very much

but I mean the difference case of the coefficient k of the second derivative of u with respect to x

If k > 0 ....

If k < 0 .... ​
 

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