Problems to Lecture 1 Problem 1. The decision maker has the following utility function U(W) = WI-x 1 - 7 Recall that the absolute and the relative...

I have attached a screen shot for the two questions I need help with. Thanks in advance.

Problems to Lecture 1Problem 1. The decision maker has the following utility functionU(W) =WI-x1 - 7Recall that the absolute and the relative risk-aversion coefficients are given byRA(W) =-U"(W)U'(W)RR(W) =-U"(W)U'(W)Wa) Find the restrictions on the parameter y at which the utility function is well-behaved (U' > 0 and U" < 0).b) Find the expressions for the decision maker's absolute and relative risk aversioncoefficients. How the absolute and relative risk aversion coefficients dependon wealth?