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Multivariate distribution : Mean vector?

  1. Nov 21, 2009 #1
    Hello friends.My English is bad :) .I'll try to explain my trouble.

    In question: Q function according to x1 and x2 are substitutes when the joint comes out of solution. Of the solution in theory I do not understand where they come from.Is there another solution or the problem? Where is the theoretical? Can you please explain mathematically?

    ----Question---

    Probabilty density function:

    [tex]f(x)=\frac{1}{\pi}\left(exp\left(\frac{-1}{2}\left(9x^{2}_{1}+2x^{2}_{2}+8x_{1}x_{2}-20x_{1}-8x_{2}+44\right)\right)\right)[/tex]

    Multivariate normal distibitions

    mean vector of the universe?

    Answer:

    [tex]\mu=\left(2,-2\right)[/tex]

    --------------


    Thanks
     
  2. jcsd
  3. Nov 22, 2009 #2
    Please Help ME :D

    Teory and proof....

    Thanks....
     
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