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MathCad help

  1. Jun 19, 2004 #1

    jcsd

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    How can you define a four vector in mathcad?

    Bascially, I want to adjust the vector (mutiplying by arbitary constants if necessary):


    [tex]I = \left(\begin{array}{c}cdt\\dx\\dy\\dz\end{array}\right)[/tex]

    such that:

    [tex]|I|^2 = c^2dt^2 - dx^2 - dy^2 - dz^2[/tex]
     
  2. jcsd
  3. Jun 19, 2004 #2

    chroot

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    You need the (Minkowski) metric to take the inner product.

    - Warren
     
  4. Jun 19, 2004 #3

    jcsd

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    I worked out eventually that all I needed to do was mutiply were suitable by i and take the inner product of I and I.
     
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