Find the inverse of matrix A and check it by calculating 
. 
Definitions:
Epicurus
An ancient Greek philosopher known for his emphasis on simple pleasures, friendship, and the pursuit of happiness through knowledge.
Hedonists
Individuals or philosophies that prioritize pleasure or happiness as the highest good.
Self-defeating
Refers to actions or policies that undermine their own goals or purposes.
Psychological Egoism
A theory suggesting that all human actions are motivated by self-interest, even in what seem to be acts of altruism.
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