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Learn to determine if a relation given by a set of ordered pairs is a function. If you're seeing this message, it means we're having trouble loading external resources on our website. If you're …

This Khan Academy page provides frequently asked questions about functions, including definitions and examples.

An introduction to functions. If you're seeing this message, it means we're having trouble loading external resources on our website. If you're behind a web filter, please make sure that the …

Khan Academy

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While Boolean Algebra is a formal system leading into Discrete Math, the entry point, the topic is so much richer: combinatorics, graph theory, generating functions. I would love to see all of that!

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