3. Two risky assets with returns ri, r2 and standard deviations 01, 02, and correlation p. Calculate the weights for the following two optimal portfolios. a. Minimum volatility (variance) portfolio minimizes the overall risk min o s.t. Wi+w2 = 1 b. Maximum Sharpe Ratio portfolio delivers the highest expected return of unit of risk may'p - ry ma Op s.t. Wi+w2 = 1