3.5 Relations and Functions: Basics
3.5 Relations and Functions: Basics A. Relations 1. A relation is a set of ordered pairs. For example, 2. Domain is the set of all first coordinates: so 3. Range is the set of all second coordinates: so B. Functions A function is a relation that satisfies the following: each -value is allowed onlyone -value Note: (above) is not a function ...
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