Find the inverse matrix, if one exists. 
Definitions:
Decision Tree
A graphical means of analyzing decision alternatives and states of nature.
Analytic Decision Process
A systematic approach to problem-solving and decision-making that relies on logical analysis and data evaluation.
Decision-making Process
The series of steps or stages involved in selecting the best course of action among several alternatives to achieve a desired outcome.
Decision-making Process
A systematic sequence of steps or stages that one follows to come to a conclusion and make a choice among alternatives.
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