Industrial Engineering and Production Management
In order that linear programming techniques provide valid results

Only one factor should change at a time, others remaining constant
Relations between factors must be linear (positive)
Either (A) or (B)
Relations between factors must be linear (negative)

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Industrial Engineering and Production Management
The correct sequence of phases in value engineering is

Creative phase, investigation phase, evaluation phase, information phase
Information phase, creative phase, investigation phase, evaluation phase
Creative phase, information phase, investigation phase, evaluation phase
Investigation phase, information phase, creative phase, evaluation phase

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