Partial or Regular Derivative for Functional Derivative Stationary Value of 0?

[delve]

Hi,

I have a question about a functional derivative. When determining the condition that the functional derivative have a stationary value of 0, do I use a partial derivative or a regular derivative? I would really appreciate the help. Thank you!

David

 

[brydustin]

Hi,

I have a question about a functional derivative. When determining the condition that the functional derivative have a stationary value of 0, do I use a partial derivative or a regular derivative? I would really appreciate the help. Thank you!

David

Could you be a little more specific what the functional is?
Regardless, here is something that you may find helpful:
http://www.math.ucdavis.edu/~hunter/m280_09/ch3.pdf

 

[delve]

Thank you very much! I appreciate it! :D