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Please briefly help me with these 3 questions fast 1. Are the vectors u - (-2, 3, -1) and U = (2, 1, -1) orthogonal,

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Please briefly help me with these 3 questions fast

image text in transcribed
1. Are the vectors u - (-2, 3, -1) and U = (2, 1, -1) orthogonal, parallel, or neither? 2. Find a unit vector orthogonal to both u = i + 7 - 3k and U = 27 - 7+ 5k The following is for extra credit 3. The following statement is true. Explain why. If u # 0 and u . v = 1 . w. u xu = uxw, then u = w

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