Question: Use the vectors u = -4, 2 and v = 5, 1 to find the quantity. State whether the result is a vector or a

Use the vectors u = 〈-4, 2〉 and v = 〈5, 1〉 to find the quantity. State whether the result is a vector or a scalar.
1. 2u · u
2. 3u · v
3. 4 - ∥u∥
4. ∥v∥2

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