| Description | Theory | Hint |
| p.x=w for all x within x(p,w) | |
| In the 2 X 2 production model, if the endowment of a factor increases, the production of the good that uses this factor relatively more intensively increases | |
| The derivative of the expenditure function with respect to price is the Hicksian demand | |
| Marshallian Demand equals negative 1 times the derivative of the value function with respect to price divided by the derivative of the value function with respect to income | |
| The market demand satisfies this if x(p1, w1) is revealed preferred to x(pN, wN), then x(pN, wN) cannot be revealed preferred to x(p1, w1) | |
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