Examlex
If the graphs of a system of two equations are both parabolas, what are the possible numbers of solutions (with
real coordinates) of this system?
Narcissism
A personality attribute characterized by an excessive preoccupation with oneself and a lack of empathy for others.
Object Permanence
The understanding that objects continue to exist even when they cannot be seen, heard, or otherwise sensed.
Piaget
A reference to Jean Piaget, a Swiss psychologist known for his pioneering work in the study of child development and cognitive psychology.
Conservation
The act of preserving, protecting, or restoring natural environments, species, and resources for future generations.
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