1. Suppose that there is no riskfree asset, and that all the n risky assets have the same variances (call it '), and have zero covariances with each other (eg. they are independently distributed). Prove that the global minimum variance portfolio is equally- weighted, i.e. each weight w.-I. e 1. Suppose that there is no riskfree asset, and that all the n risky assets have the same variances (call it '), and have zero covariances with each other (eg. they are independently distributed). Prove that the global minimum variance portfolio is equally- weighted, i.e. each weight w.-I. e