For the curve given by 
,find the unit normal vector. 
Definitions:
Parent-Child Relationships
The bond and interaction between parents and their children, which is crucial for the child's development and socialization.
Conflict and Alienation
Describes a state of disconnection and estrangement experienced by individuals or groups, often resulting from social, economic, or personal conflicts.
Jean Piaget
A Swiss psychologist known for his pioneering work in child development and cognitive psychology.
Cognitive Stage
A phase of cognitive development in individuals characterized by specific capabilities of thinking, understanding, and processing information.
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