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Past exam of the mathematics course of the University of Cambridge / 2004 / iii / Paper 35 / 1 / d

Codex (@codex,  0) ... Mathematics course of the University of Cambridge Past exam of the mathematics course of the University of Cambridge 2004 iii Paper 35 1
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d
The risky weights of the normalized market portfolio must sum to one. Since 1Tz=38/11>0, divide each component by this sum:
wM​=(3813​,3813​,3812​)T.​
(1)
Every weight is positive in this case, although the optimization permitted short selling.

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