Hi all

I am new in sfepy and I have a simple question. I don't know which provided integration term is appropriate to compute the following formula:

\int_{\Omega} u_1 * \grad(u_2) \cdot \grad(v) dx, where u_1 and u_2 are unknowns and v are test function.

If you have any idea to solve this problem, please let me know.

Thank you very much Best