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State the simplified independent case
Two proposals are independent in this cluster when choosing one does not require, exclude or alter the modeled cash flows of the other. Under an additive model and sufficient budget, both can enter a combination. The definition belongs in the assumptions.
Specify a choice that cannot coexist
Two alternative machines for the same required process may be mutually exclusive. Adding their individual NPVs as though both were feasible would invent a combination that the case does not permit.
Separate a dependency from either simple label
| Relationship | Feasible-set effect |
|---|---|
| Independent | Can combine under other stated limits |
| Mutually exclusive | At most one from the defined group |
| Prerequisite | One choice requires another |
| Interactive benefits | Combined value may differ from the sum |
Use a calculator that matches those relationships
The bounded combination tool below assumes independence and additive entered NPVs. It does not enforce prerequisite or exclusivity groups. A successful numerical search cannot validate relationships that were omitted from its inputs.