Question: Searching for the Efficient Frontier

HI

Hot on the heels of my previous question https://www.mapleprimes.com/questions/227935-Multiply-Contents-Of-Vector-To-Get-Expected-Value#answer262336

I have attempted to maximize growth while keeping variance below a fixed level (with not much success), but 

can any of you maximize the growth of a 3 stock portfolio while minimizing the variance.

Efficient_Frontier.mw

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