Let the function y = 5u2 + 8v be the function of the total happiness (y) obtained by the consumer for the consumption of units of good u and good v.  Find the partial derivatives  / ,   /   Explain the concept of marginal utility  Interpret  / ,   /  in the microeconomic context of marginal utility  What good brings greater joy to the consumer with its consumption? (When it derives partially with respect to u you should take v as constant, and when it derives partially with respect to v, u will be taken as constant. Example  /  = 10)