Abbas,
\dfrac{\partial f(x) \phi_i}{\partial x} is just \dfrac{\partial
f(x)}{\partial x} \phi_i+f(x)\dfrac{f(x)}{\partial x} which I would use.
There is no need to integrate by parts.
Best,
Daniel
On Tue, Jan 23, 2024 at 2:37 PM Abbas Ballout <[email protected]>
wrote:
> I know I can query the standard shape gradient at a quadrature point with
> fe_values.shape_grad(i,
> q).
> Is it possible to query for something like the gradient of the shape
> function multiplied by another function? I need \dfrac{\partial f(x)
> \phi_i}{\partial x} but I don't want to integrate by parts.
>
> Abbas
>
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