Why does a non-binding constraint usually have a shadow price of zero?
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A non-binding constraint has unused capacity, so giving the company more of that resource would not improve the current solution. In other words, the resource is not limiting the business right now, so its extra value is zero
A non-binding constraint usually has a shadow price of zero because it has unused resources or slack. Increasing the RHS of that constraint will not improve the objective value, since the constraint is not limiting the current optimal solution.
A non-binding constraint usually has a shadow price of zero because increasing its available resources does not improve the optimal objective value.
A non-binding constraint has a shadow price of zero because extra resource capacity provides no marginal value to the objective function
A non-binding constraint usually has a shadow price of zero because the resource is not fully used at the optimal solution.
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