Find the minimum value of 
. Consider only positive x-values.
Definitions:
Perceptual Set
A tendency to perceive or notice some aspects of the available sensory data and ignore others, influenced by expectations, culture, emotions, and other psychological factors.
Top-Down
Top-Down processing refers to a cognitive approach where perception starts with the formulation of a high-level concept, and then works down to the finer details.
Just Noticeable Difference
The smallest alteration in a stimulus that an organism can barely perceive.
Schemas
Cognitive structures that help us organize and interpret information, based on our accumulated knowledge and experience.
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