For the utility function u(x, y) = x^(1/5) * y^(1/4), calculate the optimal demand functions x* and y*. From the maximized utility function (x*, y*), determine whether the associated preferences are risk-averse, risk-seeking, or risk-neutral. (You may find it convenient to write the maximized function in the form u(y*) = w to avoid clutter - but it's up to you.) For a bonus point, what do you think is the condition for the utility function to represent risk-averse preferences?