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Find all points (x, y) where f(x, y) = - 2 + 4x - 6y + 8 has a possible relative maximum or minimum.
Enter your answer as just (a, b) where a, b are either integers or reduced fractions of form .
Service Gaps Model
A framework used to identify and analyze the gap between customer expectations and the actual services delivered, aiming to improve service quality.
Potential Gaps
Possible disparities or differences that could emerge between expectations and actual outcomes in various contexts, such as service delivery, product performance, or communication.
Service Quality
The evaluation of the alignment between a customer's expectations and the quality of service provided.
Evaluate Service
The process of assessing the quality, efficiency, and satisfaction provided by a service to ensure it meets or exceeds customer expectations.
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