Prove Corollary 6.9. Corollary 6.9 Under the assumptions of Proposition 6.8, suppose that, for the optimal portfolio

Prove Corollary 6.9.

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Corollary 6.9 Under the assumptions of Proposition 6.8, suppose that, for the optimal portfolio process (w)=1...T. N Cova (+1-ry) +rf (-(+))-0 -n=1 F= 0, (6.28) - for all t = 0,1,...,T-1, ie, aand ((+1) + r) are uncorrelated conditionally on F. Then the optimal portfolio process (w)=1T is characterized by N Erf)+rf =1 for all n = 1, N and t = 0, 1,..., T-1. (+1- F= 0, (6.29)