There are just three assets with rates of return e covariance matrix and the expected rates of return are v= 「2 1 0
1 2 1
0 1 2]
r=[ 4
8
8]
(a) Find the minimum-variance portfolio. [Hint: By symmetry wi w3]
(b) Find another efficient portfolio by setting λ = 1, μ = 0.
(c) If the risk-free rate is rf = .2, find the efficient portfolio of risky assets.