If $\mathbf{F} = P\mathbf{i} + Q\mathbf{j} + R\mathbf{k}$, then the curl of $\mathbf{F}$ is given by:
$$\nabla \times \mathbf{F} = \left(\frac{\partial R}{\partial y} - \frac{\partial Q}{\partial z}\right)\mathbf{i} - \left(\frac{\partial P}{\partial z} -
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