Let $\mathbf { u } \times \mathbf { v } = \mathbf { i } - \mathbf { j } + 2 \mathbf { k }$

Short Answer

Let $\mathbf { u } \times \mathbf { v } = \mathbf { i } - \mathbf { j } + 2 \mathbf { k }$ . Find $\mathbf { u } \cdot ( \mathbf { u } \times \mathbf { v } )$ ), if it exists.