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Find numbers x and y so that w⃗ −x⋅u⃗ −y⋅v⃗ w→−x⋅u→−y⋅v→ is perpendicular to both u⃗...

Find numbers x and y so that w⃗ −x⋅u⃗ −y⋅v⃗ w→−x⋅u→−y⋅v→ is perpendicular to both u⃗ and v⃗, where w⃗ =[9,132,42], u⃗ =[6,1,1], and v⃗ =[3,3,−21](notice that u⃗ is perpendicular to v⃗)

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