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As the cost of performing operations depends upon both machinery size and operator time, optimizing techniques must treat both of these terms as system variables in addition to treating their product as a variable. Where problems of mechanization occur in isolation, optimum values for machine size and operating time can readily be arrived at by the application of differential calculus (5). Where competition exists for time and capital, however, it is desirable that the product terms be handled by a general mathematical programming technique. It has been shown (6) that this can be achieved by an iterative process involving Lagrange
product terms in mathematical programming
MacHardy, F. V. 1968. PRODUCT TERMS IN MATHEMATICAL PROGRAMMING. Canadian Agricultural Engineering 10(2):51-52.
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