Show that the function 
is concave upward wherever it is defined.
Definitions:
Behavior
Observable actions or responses of individuals or groups, which can be influenced by internal or external factors.
Influence
The capacity to have an effect on the character, development, or behavior of someone or something.
Jungian Theory
A psychological approach developed by Carl Jung focusing on the collective unconscious, archetypes, and the process of individuation.
Attitude
A psychological construct that represents an individual's degree of like or dislike, positive or negative views, towards a person, object, or idea.
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