For example , in consumer theory the objective function is the indifference - curve map ( the utility function ) of the consumer .
The more usual solution will lie in the non-zero interior at the point of tangency between the objective function and the constraint .
In consumer theory the objective function is the indifference - curve function ( the utility function ) of the consumer .
The more usual solution will lie in the non-zero interior at the point of tangency between the objective function and the constraint .