5. a) Use the graphical method to show the effect of an increase in the euro-area interest rate R on the dollar-euro exchange rate Es/, holding all else constant. b) Use the mathematical method to show the same result. (Hint: your math will look very similar to an example from class on March 30/April 1. Try multiplying the top and bottom of the RHS fraction by -1 to get it in the form you need.) 5. a) Use the graphical method to show the effect of an increase in the euro-area interest rate R on the dollar-euro exchange rate Es/, holding all else constant. b) Use the mathematical method to show the same result. (Hint: your math will look very similar to an example from class on March 30/April 1. Try multiplying the top and bottom of the RHS fraction by -1 to get it in the form you need.)