Suppose that utility depends on the square root of the amount of good X consumed: U = √ X.
(a) In a spreadsheet enter the values 1. . . 25 in the X column, and in the adjoining column compute the value of utility corresponding to each quantity of X.
(b) In the third column enter the marginal utility (MU) associated with each value of X - the change in utility in going from one value of X to the next.
(c) Use the ‘graph' tool to map the relationship between U and X.
(d) Use the graph tool to map the relationship between MU and X