Scalar function satisfying div f=F

[rammer]

What's the algorithm for finding scalar function satisfying div f=F if I know vector F?

 

[LCKurtz]

There isn't one. div is not defined on scalars and the divergence of a vector would be a scalar. What did you really mean to ask?

 

[rammer]

Sorry, I meant grad f=F, and I want to get scalar function f from vector F (for instance electric potential from electric intensity).

 

[LCKurtz]

Sorry, I meant grad f=F, and I want to get scalar function f from vector F (for instance electric potential from electric intensity).

Look at the following link for an example:

http://www.math.wisc.edu/~conrad/f07/potentials.pdf

 

[rammer]

thanks, that's exactly what i was looking for