If $\vec { u } = 2 \vec { i } + 2 \vec { j }$

question 19

Essay

If $\vec { u } = 2 \vec { i } + 2 \vec { j }$ and $\vec { v } = 2 \vec { i } - 2 \vec { j }$ , find the values $c _ { 1 }$ and $C _ { 2 }$ such that $18 \vec { i } + 6 \vec { j } = c _ { 1 } \vec { u } + c _ { 2 } \vec { v }$ .

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