+A **real function** is a [Function](/wiki/function) whose domain and codomain are subsets of the [Real Numbers](/wiki/real_numbers). It elegantly describes a relationship where every input, a real value, corresponds to a single real output.
+## See also
+- [Domain](/wiki/domain)
+- [Codomain](/wiki/codomain)
+- [Calculus](/wiki/calculus)
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