I have a term in my PDE \int_{\Omega}xz\frac{\partial^2 P}{\partial x\partial z}v(\mathbf x)\,d\mathbf x where \mathbf x = [x,y,z]^T. Does this term need to be reduced? I’m not sure how to reduce this term since it contains derivative in x and z?

Small question with variational form

Yoann June 23, 2020, 4:04pm 2

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