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Let a and b be two 4-dimensional vectors: a=(2,5,2.6,6) and b=(15,2.5,4,4) (A) What is ||ab2 ? (B) What is ab1 ? (C) What is the

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Let a and b be two 4-dimensional vectors: a=(2,5,2.6,6) and b=(15,2.5,4,4) (A) What is ||ab2 ? (B) What is ab1 ? (C) What is the cosine of the angle between a and b

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