Question

\text { 1. Let } \vec{u}=(-1,0,2), \vec{v}=(1,2,3), \vec{w}=(0,-2,1) \text {. Find: } \text { (a) }(\|\vec{v}\| \vec{w}) \cdot(\|\vec{w}\| \vec{v}) \text { (b) } \vec{u} \cdot(\vec{w} \times \vec{v}) \text { (c)

} \vec{u} \times(\vec{v} \times \vec{w}) \text { (d) } \operatorname{proj}_{\vec{v}} \vec{u}

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