What is the smallest value of the objective function coefficient X1 can assume without changing the optimal solution? 
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Persistence
The quality of continuing steadfastly or firmly in some state, purpose, or course of action, in spite of opposition.
Allowing Failure
The concept of permitting mistakes or setbacks as a necessary part of the learning process or path to success.
Survey Design
The process of creating a survey to collect data on specific topics, ensuring questions are structured effectively to gather accurate responses.
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A structured plan of eating and drinking where quantities, menus, and/or diets are tailored to achieve specific health or fitness goals.
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