Use the total differential to approximate the change in 
as (x, y) varies from 
to 
.
Definitions:
Long Lead Times
Extended periods required to manufacture a product or complete a process, often causing delays in production or output.
Long Setup Times
Extended periods required to prepare equipment or processes for a new production run, often causing inefficiencies.
Large Batch Sizes
Large Batch Sizes refer to the production strategy of manufacturing goods in large quantities at once to maximize efficiency and reduce costs per unit.
Large Inventories
Holding significant quantities of product or materials on hand, which can impact a company's financial statements and operational efficiency.
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