2. Go to http://finance.yahoo.com/ and download data from June 2012 to December 2016 for the monthly adjusted closing price for Facebook, Inc (FB), Ford (F), and Microsoft (MSFT).

e. find the portfolio that minimizes the overall portfolio variance (a three stock portfolio consisting of these three stocks) subject to the requirement that you earn an expected monthly return of at least .005.

f. Comment on your findings in e & d (one short paragraph)

how do I solve (e)?