consider a universe of just three securities. They have expected rates of return of 10%, 20%, 10%, respectively. 2 portfolios are known to lie on the minimum-variance set. They are defined by the portfolio weights:

w = [.6, .2, .2] v = [.8, -.2, .4] <-- vectors

a. what are the minimum and maximum possible values for the expected rate of return on the market portfolio?

b. now suppose you are told w represents the minimum-variance portfolio. Does this change your answer to (a)?