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Let $R$ be a relation on a set $A$. Explain how to use the directed graph representing $R$ to obtain the directed graph representing the inverse relation $R^{-1}$ ($R$ inverse).

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    If you make the definitions clear to yourself, this should be not so hard. What have you tried so far?2011-10-21
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    Have you tried making up a simple example to see what happens?2011-10-21

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