How do I define and solve Portfolio Return Variance in maple

Question:How do I define and solve Portfolio Return Variance in maple

Posted: turloughmack 0

October 27 2010

Portfolio Return Variance

I need help in defining and solving Portfolio Return Variance in maple

sigma_p = sum sum x(i)x(j) sigma(i)sigma(j)

where [sum(x(i)r(i) = r(p))]

and [sum(x(i) = 1))]

Please help

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