Utility.demand(incomenum, pricesdict{str:num})

Calculates the total demand for the various goods given some income. Subclasses are required to implement this method.

Parameters

• income — num, required

  The amount of income available to spend on the goods in question. In a barter model this will be the quantity of the numeraire good, and the price of the numeraire in the next argument will be 1.

• prices — dict{str:num}, required

  The prices of the various goods, either absolute (in terms of a monetary good) or relative (in terms of a numeraire good, in which case the price of that numeraire good should be 1).

Return Value — dict{str:num}

The gross demands for the various goods.