1.1 For this problem, we consider a portfolio of N risk assets and one risk-free asset. The standard "textbook" recipe to construct the efficient frontier in the standard deviation (x-axis) - expected returns (y-axis) plane] is to draw the line that passes through the return of the risk free rate (rj) on the y-axis and that is tangential to the hyperbola that represents the efficient frontier of only the risky asset. However, this recipe is only valid when