5. Let the sequence of vectors ao, a1, a2... have dot products, 1-|j-k| 1 + |j - k| ajak = Find the area of the triangle with vertices given by the tip of the vectors ao, a1, a2 emanating from a common origin. Choose the closest answer. (A) 2.0 (B) 1.89 (C) 2.5 (D) 0.94 (E) 2.75

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