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Math Help - Vector Triple Product, Alternating Tensor

  1. #16
    A Plied Mathematician
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    It's a vector triple product:

    \mathbf{r}\cdot(\mathbf{\Phi}\times\mathbf{r}).

    And what do you know about \mathbf{r} relative to \mathbf{\Phi}\times\mathbf{r}?

    What does that tell you about the dot product in the vector triple product?
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  2. #17
    Super Member craig's Avatar
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    That they're orthogonal vectors?
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  3. #18
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    Correct! So the dot product is...
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  4. #19
    Super Member craig's Avatar
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    Zero!

    Haha honestly thank you so much for the help with this, I really appreciate it.

    Think I'll just leave the second bit for now.....

    Thanks again!
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  5. #20
    A Plied Mathematician
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    You're welcome!
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