Consider a consumer whose utility function is given by () = & + ' where > 0, > 0, and where $ denotes the quantity of commodity = 1, 2. Suppose that the consumer must consume at least > 0 units of commodity 1, that is, the consumer's consumption set is given by = {(&, ') R': & , ' 0}. a) Derive the consumer's Walrasian demand function (, , ) for any 0, > 0, /& >