(? b ) Is it possible to have corner solutions ? If yes , unde what condition ? Taking corner solutions into account , derive the equations of the indirect utility function . c ) Suppose the price of x is $ 2 and the price of y is $ 4 , the consumer has an income of $ 36 . Calculate the income and substitution effects ( with respect to x ) when the price of x decreases from $ 2 to $ 1. Question 4 ( Roy 's Identity Consider a general utility maximization problem with