Word Count : 237

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We are given: > If \$\mathbf{u}\$ is a constant vector, show that > > $$ > $$ \nabla \times (\mathbf{u} \times \mathbf{r}) = 2\mathbf{u} ] ### Where: * \$\nabla \times\$ is the curl operator. * \$\mathbf{u}\$ is a constant vector. * \$\mathbf{r}\$ is the position vector: $$ __________ ____ _____ _________ _________ __________ _____ __________.
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