Find the scalar and vector projections of $\mathbf{b}$ onto $\mathbf{a}$, where $\mathbf{a} = \langle -1,1,2\rangle$ and $\mathbf{b} = \langle -1, 8, 4\rangle$.

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1. $\textrm{comp}_{\mathbf{a}}\mathbf{b}=$

2. $\textrm{proj}_{\mathbf{a}}\mathbf{b} =$

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