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# help

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Let $$\mathbf{a}, \mathbf{b}, \mathbf{c}$$ be three vectors that lie on the same line. Find $$\mathbf{a} \times \mathbf{b} + \mathbf{b} \times \mathbf{c} + \mathbf{c} \times \mathbf{a}$$

May 1, 2020